macguyver77, In reply to you asking if you could install a larger fuel tank to add nose weight is a bad idea. If you run low on fuel, you are still tail heavy. Balance where recommended, then adjust after you fly if needed.

My Saito .82 started running smooth after about 4 tanks. Run a 14-4w or a 15-4 on this engine.
I used an OS 61FX in a Pizazz once. Lots of power, but difficult to hover. I now run a Saito .82 on the Pizazz and I can't tell you how much easier it is to hover with the 4 stroke. The Twist and .82 should be a great combo.