Hi, Hoping someone here can help me. (and sorry for the long post, trying to give as much detail as possible) Bike: 89 Honda Spada VT250J Problem: Drive chain over tightened. (Chain is not new, but not beyond service either. Sprockets are in good conidtion, no noticable "waving" of teeth) Details: My drive chain was loose. Found some info on here on how to tighten it, there is the lock nut and chain adjusting nut on the rear of the swingarm. I (thought I) was careful to adjust each side the same as to not put the wheel out of alignment. My adjustment didn't seem to make any difference to the chain tension so I gave up and thought I would seek more advice. Riding it after I had played with it, I could feel I must have put the back wheel slightly out of alignment, as it seemed to be warbling (probably the best word to describe it). Got home and thought I'd have a look and see if I could see any noticable difference. I noticed the notch marks near the wheel nut were slightly different on each side, so I thought I must have put that out with my adjusting. So I decided (stupidly) to adjust one side lots to make them even. Without realising what I was doing, I've made the chain pretty tight. Probably 15mm or so of movement (service manual says 25mm is good). Now when I walk the bike backward I get a clicking/clanking sound coming from either the rear wheel, chain, brake or something. No doubt I have put the wheel right out of alignment too. Can anyone please tell me how I loosen the chain off slightly again? When I undo the lock nut and loosen the adjuster nut it just comes loose and has no effect on the chain. Also does anyone know of a good site detailing the home wheel alignment procedure (using string I believe?) I realise this was pretty dumb of me to do! Your help is really appreciated cause I am without transport now!