RE: OS La .46
I have not tried to run my .46 LA inverted. Perhaps an onboard glow system would be the answer. I ran my .46 LA in a SIG 4* 40. The best way for me to describe the way it performed would be lack-luster. It's performance improved when I switched from a Master AirScrew prop to an APC prop, but I ended up replacing it with an OS 50SX. I put the .46 back on my trainer.
Scott