Happy Thanksgiving, all!
We're having a late dinner for the holiday, so I figured I'd put my time to good use by attempting the tach separation and fix. It took a while, but I got the two halves apart using the paint can opener and pliers method. But imagine my surprise when I did NOT find the missing screws that hold the face plate on and in my case would have keep it from spinning around wildly. I don't know where the heck the screws could have gone, but they're nowhere in the housing, so I guess it means I'll need to replace them. Anyone have any idea what specifications they are? I know they're black, but beyond that I'm at a loss. I don't see them referenced in the fiche. And while I'm at it, I'll ask a couple more questions...because that's what I do.

Here goes.
1. As mentioned, what size/type of screws should I get to secure the gauge face?
2. Once I get them and put them on, should I use Loctite (or nail polish or something else) to keep this from happening again? I'm assuming it was a result of normal vibration.
3. I'm generally a 'if it ain't broke, don't fix it' kind of guy, but while I have this thing open, anything else I should do to the internals that would make things better and that I wouldn't likely screw up?
I bought a replacement rubber meter cushion, so that will be replaced when I put it back together. I also bought replacement bulbs, so I'll replace those before I re-install. And I'll clean the glass. I'm guessing Windex or other glass cleaner will be fine for that?
Thanks in advance for your thoughts, and I hope you all have a terrific holiday with friends and loved ones! I know i'm certainly thankful for a lot, not the least of which is having found this forum.
Don