RE: OS LA or Tower 46 Engine for Trainer?
I've got 3 Tower .46 motors and they all run flawless. One of the Towers is in a SIG LT-40 Kadet Trainer. It has lot's of power. I took an older OS .46 out and put this Tower in it and saw a big difference right away. I'm sold on them, but you may hear different from others.
Good Luck,
Peter