Jay, I'm buying 35 acres to build a track on, that is why the bikes are for sale, I will also be putting my 74 Maico 450 up for sale in the next week. The 74 1/2 450 reed valve maico I'm building now has slowed down till I get the land deal done, but that will be my vintage bike and I still have my 84 RM250 and I will be building a RM500 in a 84 RM250 frame after that. Jay thanks for all your help on the 480, with the Simons links and washers. DG