Carbon gear, Kavan wheels, carbon spinner. All the weight I took off the plane came from the front, I suspected I would have a problem, and I did. I now have dual rx li-ions shoved up in the forward/right pocket of the fuselage instead of a single, which has helped the situation considerably. I am using an old Tx battery as an easily moveable ballast to help find the sweet spot. Once I do that, I'll measure the exact cg, remove the ballast, and then use the rx batteries to get it right. It's good to know the range is 3.0-3.5, that way I can quickly work the cg back to where I want it and get on with trimming/programming.