I took my bike for a spin today after doing a lot of modifications to it...including removal of front wheel, back wheel, shock absorbers, forks, and fork/steering mounting plate for painting. While riding, it was very uncomfortable because it seemed like the bike did not want to go straight. It wasn't like an extreme pull to either side but it definitely feels as if the alignment is off somehow. I turned around when I noticed it was happening because it felt unsafe. Any suggestions why this would be happening?