Wes:

She used to be at 3.5, until I removed the 4oz brass prop nut and substituted an aluminum one. Haven't had a chance to put her together to check, but judging by the difference in trim (went from a little up elevator trim to a little down for level flight at cruise) I suspect the CG is now around 3.75, still just a bit forward of the recommended 4.0.

Wheel weights are not near as effective as something way up front.

Have you thought about trying a Harry Higley heavy hub? The 4oz one for your crank can be found at:

http://www3.towerhobbies.com/cgi-bin...&I=LXL716&P=ML

If you decide you want to try one, I'll sell you mine for $10 plus postage. I think we can beat Tower's shipping costs, unless you can find one close by.