What motor are you using now and how much does it weigh with pipe?

My motor weighs in at 720gm (25.4Oz) with the Turbo-Jett Muffler. I believe that is slightly heavier than the suggested 91 Surpass.

I've read some posts that say the suggested CofG is very conservative, and i've read just as many posts saying they moved the battery up to the front to achieve the suggested CofG and were happy with the way it flew.