Fyi, I didn't think the bit fit poorly, but i didn't ride the size down from it (frame only, not built up). The shop owner was insisting that the 90mm stem wasn't for me though, and was talking about how much more stable the handling would be on the 53 vs the 55 (actual top tube on the 55 was 56). He was saying the longer stem would make it more stable... Anyways, I'm just not sure if he's just trying to sell me the bike or if i really should ride the size down. I ride a 55cm top tube on my current bike (not sure the stem length but i'm guessing it's 100mm) and he thought it was too small...