Mine balanced out 1/4" behind the recommended CG with the tank empty, I think that is pretty good, lines are straight in flight and just a touch of down elv when inverted, Mounting was a snap, I put my throttle servo on the mounting box and have about a 2 1/2" push rod. I dont know how to post pics here but if you go to my gallery you can see the small hole where the Choke and the needle valves are pretty accessible.

I did cut out the bottom half of the fake eng and did cut a slot below it for cooling, there is one small baffle in it, I dont know what temps are but when I land I can put my hand on the eng with out burning the crap out of it, I do have a temp gun will have to take it to the field this weekend and see what it is.