I ordered two Petcock Rebuild Kits (20-0014) from Mikesxs. I have the original fuel petcocks on my 76' XS650C and I decided to replace the gaskets, etc. on my petcocks instead of buying new ones for around $44 each. My petcocks have 3 screws on the backside. All is going well, but I'm a little concerned about the diameter of the new red drain plug bolt gaskets that are included in the kit. They seem rather large for the bolt. I do have an inquiry sent to Mikesxs and I'm confident they will advise me on this. I thought I might just try a run of the mill rubber gasket, but suspect that these rigid red gaskets are constructed of materials that are resistant to degradation from petroleum hydrocarbons such as gasoline. I've looked at other websites (bikebandit, motogrid Yamaha, etc.) to find an OEM repalcement gasket, but nobody seems to have one available for Part Number 801-24437-00-00. Comments, Anyone? THANKS!! Here are some images: 1 - New gasket installed under drain plug bolt (hanging over). 2 - New gasket and petcock drain plug bolt 3 - Fuel Petcock (R) for XX650C. 4 - Old worn out gasket on drain plug bolt.