I am trying to get more low end torque for my 82 yz 490. its been in dry storage for 20 years, and now that i'm 44 i can't muscle the bike like i could 20 years ago. I am trail riding now instead of track. i am having trouble finding flywheel weights for it. anyone have any ideas where i can find them? I've tried ebay and nothing comes up under flywheel weights and didn't see any in the yamaha stores at ebay. dealers of course don't carry much for that year of bike. bike is in great shape, and runs like a typical big bore 2 stroke motocrosser, not good on tight trails... until I can get a 4 stroke, i've gotta ride what i have. does anyone know how interchangeable parts are between the IT's and yz's are from that era or where i can find at least a 10 oz flywheel weight?