I have a 2017 Fuel EX9 frame in size 21.5 that is in excellent condition that I'd like to trade for a 19.5 if anyone has one.

I went by the shop's recommendation to get the larger frame since I was in between sizes, but even after getting a shorter stem, I still feel like I'd be better off with the smaller size.

looking for a straight trade of the frame only. no shock or headset or anything...

I'm located in the Denver area and would prefer a local deal if possible.