Thanks for the responce. Some people say it's matter of trottle and rudder control or management. I have a 150 for a Hellcat that I'm going to build and I was thinking of replacing the 180 with the 150 but I didn't think it would help. Maybe a 120 or 125 would be best for me and my Stearman.
Mine also acts squirrely in the air when I trouttle up to quickly so I usally just ease it up slowly.

Does any one else have an opinion about this problem?
Shubova
[8D]