I posted a while back about my Gamma 5003. The tensioner was riding a little rough on the track. It seemed like it was binding in some spots on the track usually about a 3 or 4 inch span. I figured that I would be needing to either replace the tensioning head or send it to tennismachines to be fixed. As a last ditch effort before sending it off, I sprayed a tiny bit of wd40 on the track where the tensioner seemed to be binding and it worked like a charm. I was careful not to get any wd40 on the brake. Now the tensioner runs as smooth as it did when I first bought it. The machine is only a year old. I have heard that you shouldn't oil oir grease the track because of the problems that might occur if any got on the brake mechanism. Should I use wd40 or is there a better lubricant? It seems to me that the track should be slightly lubricated because of the metal on metal aspect. Any suggestions greatly appreciated!