I'm happy to report that I'm about 3/4 through the process of shaving the stems. Once I got used to the process it's gone faster. I'm confident the caps are not too tight. However... holy balls, the stabilizers are a nightmare. I managed to finally get one about 90% right after an hour.
I would just tell anyone planning to put these on a V60 to avoid it. I mean, I'm up for a challenge, but I have many other precious boards if this goes South. Ha
The only problem I have has so far besides the stabilizers is the light cycle caps novelty. Apparently the stem is like 1/2 a mm shifted to the left, so the cap rubs on the edge of my v60. This doesn't happen when i use the Regular caps lock key, so I'll probably just use that one
I agree with Kavik that some of the stems are just weak. You can feel them flex just by pushing on them. So, be careful, kiddos.