Unfortunately, I really don't have much time to sit down at my computer before hammer. So, I'll do what I can.
I am town and I did nothing on N3 besides force the mask back onto ChopBam. That being said, I don't think you should be looking at the N3 results on just an individual level.
While the major point of suspicion with ChopBam is gone (the 1-UP), there are still other reasons to be suspicious of him. Such as his reaction to the 1-UP accusation. I don't think we can rule out ChopBam being scum and therefore a ChopBam/Louis scum team. Unless you know something I don't, ChopBam is not cleared and while he may not be at the top of the list he's still possible scum.
So, your list should really look something like this:
MojoMan: claims vanilla town and no NK
iLikeToSnipe: claims did nothing except force mask to stay with ChopBam
ChopBam: claims copy/block of Louis
Louis: claims blocked by ChopBam
Your accusation against me is based entirely on something I can't prove or disprove. There was nobody watching me that night, so all I have is my counterclaim that I did nothing. The best I can do besides that is to try and offer different possibilities/explanations. I think you are right to focus on N3 since there are so few scum team possibilities there.
Unfortunately, I haven't had enough time to follow up on most of my suspicions. What I've been doing is trying to compare what information we can know is true and what info isn't confirmed. For example, KY's abilities are verified by FRAYDO and only FRAYDO so they aren't confirmed. My mask ability was verified by Nodlied and ChopBam, so it is confirmed.
Going off of that approach, here are the scum teams that could exist. I will list the ones that include me, but I don't "case" myself so I'll leave that up to the rest of you.
iLikeToSnipe/Louis
iLikeToSnipe/MojoMan
iLikeToSnipe/FRAYDO
ChopBam/Louis
While they're supposedly "cleared", we don't have any way to verify this outside of themselves. ChopBam was acting pretty scummy at the beginning of D4 and then got into "serious town" mode as the day went on. I am still suspicious of him due to his interaction with Orange and just how much he's claimed that we can't verify. I don't think we should be quick to write them off as a scum team.
They've both seemed to be in-step with each other a few times. This is actually one of the only instances I can find of a potential scum team seeming to work together. They both pushed MojoMan on D4.
KillingYou/FRAYDO
The only person who can verify anything that KY has done is FRAYDO. If FRAYDO is town, then I think we can safely confirm KY as town. I am getting town reads from FRAYDO, but I have been trying to revisit this assumption. KY's role does sound like a town role, but it feels wishy-washy to me, "boosting hidden potential" doesn't sit right with me. That and the fact that town supposedly has two masonry abilities. I don't think this is the likeliest possibility, but it's still something I need to followup on.
The other thing that's made me suspicious of this is the fact that scum didn't perform a night kill. The two explanations for that are that scum knew what was going to happen or that scum figured that making a kill would expose them. The only two people who knew what was going to happen were myself and FRAYDO. KY also could have guessed at what was going to happen, but if FRAYDO is town then KY must be town.
MojoMan/Louis
Just like the other pairings, we only have their own word to go off of what they've done the past few nights. The back and forth between Mojo and Louis doesn't seem that serious and neither have actually put the other in any real danger.
On D1 Mojo did place a vote on KY once it seemed like a few votes could land on Orange. In hindsight, that's definitely scummy.
Also, we have no confirmation for most of Mojo's ability claims. I wouldn't be surprised if he was vanilla after surviving that lynch, but that doesn't mean he isn't vanilla mafia.
The current teamup I've been trying to focus on is MojoMan and Louis, that's where my instincts are leading me. I wish I had more, but this is all I've been able to look into this day.