CP I wish they made a Galbreath head for the 020 I use them on all my TDs and AMEs that are modified to scream. I added shims after burning out 2 in 20 sec. The first one came with the motor so I thought it could have been softt.
MJD the 020 needles like any TD which is to say much better than anything with a backplate. A 2.5 or 2.75 may be a good place to start so I may call the shop in Canada this week. otherwise I'll work with an apc. I don't think I need a lot of thrust as the anemic pee wee has good vertical and the GLH is the same weight or less.