I recently changed my leaking OFHG with a Viton available from ECS. I've been poking around but haven't found a Viton option for the OPG. Anyone know if there is such a thing? I've had a very slight leak for a long time, just enough to mist oil on the pan, but no drips. It recently started dripping. I'm dreading this job and I'd like to make sure I don't have to do it again.