RE: Herr Pitts Special Kit Build Thread
I just found this post, so please excuse me if I'm a little late in "helping", but I just finished my Herr Pitts, but haven't flown it yet. I'm running a K&B BB .18 and it fit fine. I've also got a 4 oz. tank in the bird and it's a little tight, but no big deal in getting it to fit. The major change I made was making both the lower and upper wings bolt on, vs. rubber band. With lots of power, I wasn't about to have a wing shift or fly off. Let me know if you have specific questions and I'll try to respond.