I have two 39BB( With Stuka venturi) left from near 20 or so. None has sent them back and they run pretty nice with a 11x4 or 5. Nice quality, cuz I hate junk, and would not sell any if I had problems with any.
I dont have any LA 46 but am told that the thrust is about equal, maybe minus 300rpm,. As usual, I refund to any unsatisfied buyer, but have not had any request to do so with these.
Tiger Shark is supposed to start production of a .32 on a small case. That is why I got Thunder Shark in the first place. Speedlimit combat engines for 50$. I still use the very excellent Thunder Tiger 25 Gp for the combat work. Please see classified section for other CL engines left. Thanks, MM