Freebird, I really like the sound of the Rossi-45 on that airplane... The lateral balance thing was just a thought, the side exhaust muffler alone is enough to make lat. balance difficult, but you may be able to center it a bit---

When I saw Gary's fly I was impressed and while the GMS is actually a powerhouse, the Rossi-45--- well

Don't you guys just turn the tank around so the back of the tank is close to the engine and leave the clunk that direction? Gary knows anyway....

How about a Jett-50 on one? [X(]