RE: making servo bays
I just reread your post. Is the chippy your first kit? Or did I read it wrong? If you're planning to build a"Chippy" for your first build" it might be a little much. Try, maybe a Super Sportster, or even another 4* or something like that. The Chipmonk flys a LOT different than your 4*. It comes in MUCH hotter & won't "float" like the 4* I've built all 3 of those kits & I'd rate them, (easy to harder) 4*, SS., & chipmonk. Also, (IMO) the Chippy should have more horsepower. ( If you have a "60"size, put a "75" in it.) I built the Chippy "60" & put a "75" in it & it flies great.
Good Luck