Gotcha - I put the lock plates back on, but I didn't tighten them down because I don't have the screws anymore. Just curious if anyone has ever seen them loosen due to vibration alone. The Nitrile are all I had hanging around, the plan is to get the Viton rings in the next few weeks. I run a new type of biofuel called NExBTL, here in California. According to Neste's data, it's supposed to be compatible with nitrile. So I guess we shall see...
Cheers