Hmm...you might be (pleasantly) surprised how much a further-aft CG would help. Can't hurt to try! I know what you're saying though...takes lots of power at the bottom of a KE loop no matter what. When I pumped my Saito and pulled the muffler off it made a world of difference in KE authority...but the CG didn't change that much. You're going to love the YS! I kinda wish I'd have gone that route...but my Saito is fine...not outstanding, but fine. A 30 foot KE loop is TIGHT!

-Tom