If I owned your watch I'd only have the base of the hour hand trimmed and I'd be set.It really weird that, jumbo pinion (a lot of times) look humongous on the front photo. Not only the photo. Lot of times modded hands hole really looks that way irl. But when you look at certain angle with right light. pinion looks normal.
I assume this is caused from reflection of light , like convex mirror - reflexting light making things bigger than actual.
So I kind of fixed this issue by grinding pinion for the minute and just a little.