Before I hear it, I went to good ole Sheldon and did a search on here, building my budget single I just swapped out the old cassette on my bike and threaded on a freewheel, got a single crank and chain and my chainline looks horrible, I ran it on the stand and no worries, didnt derail, not that much noise and I have the chain nice and tight not overtightened but nice n snug, question is now if I wanna move the rear cog over to the right a bit would that work? do I need a new rim? I hear spacers spacers spacers cant find a good locally priced one and how would I use them? advice please here are the pics!! let me know maybe im Paranoid??