I'm now at the point where I need some subject matter expert info about the missing washer. I'm willing to investigate metal or plastic. The vintage diagrams (at this point everything is vintage about this reg) says it ought to have a plastic washer under the nut (01-060-107). If there was a Tech Bulletin to update that washer, only the authorized ScubaPro techs have access to those. If there is a later diagram than 1988, I haven't found it. (I've looked at frogkick, too)
The orifice oring is another issue. The geniuses at Scubapro put a repair kit together (#11-254-045) for the G250 and say it also good for the 108 and 109 but they don't include the 293 orifice oring, just 132s. The LDS techs just cram a 132 in there because it sorta fits, but its not right.
Getting help at a LDS is frustrating, the techs that really know this stuff are disappearing. Most shops just want to sell me a new disposable reg. They don't want to deal with the liability issues that come with working on old gear with incomplete info. I suspect that's what happened with our MK3, they couldn't stop it from squeaking. They said the piston was worn-out and unavailable.
So I'm hoping to hear from the forum members that remember working on these classic regs 15 years ago, and knew how to keep them performing even when the parts kits were incomplete (or wrong).
That old knowledge ought to be out there. I can do this myself but there's no need for me to reinvent the wheel. If we capture some of that knowledge here, then other R108 users can benefit, too. That's why I documented my experience setting the spring preload.
BTW, I looked at the DoubleHose website, but the washer (or the nut) isn't listed. I will call.
