Just make sure you trim off all the excess bolt end. Looks matter. I have a 15mm one but reversing the 29mm one really sounds like a good idea. Remember to secure the bolt head in the gear recess with something like red Locktite on the sides of the bolt head. All the nuts I have found have back and forth play in the gear recess. I definitely had delayed retract/extrude cycles before I did that (to the nylocknut in my case.) I never had problems with the nylocknut tightening. It might be due to a rougher finish on my bolt.