I'm guessing that you have the 40 sized bipe. If so, the manual from a World Models Bipe can be used for cg, the planes are the same size and might actually be a clone if you bought the right one. Anyway, here is the link.

http://www.theworldmodels.com/para/i.../pdf/A009S.pdf

I had an Ultimate from nitro last year, just to give a heads up, if you hear any flutter throttle back and land immediately and land. I had one of the tabs that hold the outer struts to the wing come loose. It stripped the servos and the plane was destroyed. Anyway, now I have a new bipe of the same size and installed a 52 fs which should power it just fine (I haven't taken it out yet though).

I hope that helped... take care
Jerry