I built my Skybolt about 10 years ago, (where does the time go?)

Anyway, while GP gives you fabulous detailed instruction, it's not a beginners kit. But it's no reason to give anybody a coronary.

The plane IS on the heavy side, and I didn't do a thing to lighten mine, nor would I try. Mine was originally built for an OS 90FS (The old style, before the Surpass) and I had no problem with it being tail heavy.

I recently brought it out of mothballs and put in a YS 91AC, and had to move the battery pack to the rear of the servos to balance. So with a 120, you shouldn't have any tail heavy problem.

PS I even used the original cowl. Here she is!