haha poor dog..
what did he do 2 deserve all this lol
& b4 you go selling & buying things, why don't you just adjust your rear shock!?
I mean, it usually isn't a big problem bcus once you sit on it the & theres some weight on the bike
the chain tightens bcus the swingarm not only goes up, but back towards the rear (tightens chain)
so, it you adjust your Rear shock 4a softer setting, OR you could cut abit off the Spring..
just be careful, working on suspension is a little dangerous, I've heard of ppl gettin hurt lol