I acquired a used Matco PV-1 parking brake valve a while back, and the other day while I was playing with it I noted that the action was a little stiff. I decided that rebuilding it was probably not a bad idea, so I ordered an overhaul kit from Matco for $19 and did surgery on it today. The snap ring on the end that holds the camshaft in place is so small that of course my 30 year old snap ring pliers wouldn't fit, so last week I went to Lowes the and bought a decent set of channel lock brand that came with interchangeable tips. In prepping to rebuild this valve, I realized I didn't have anything on hand to lube the new O-rings. I popped by work to see if I could score a few drops of 5606 from the guys in the shop. That's why I logged 4 hours for this entry. The actual job only took about 20 minutes, but the travel time and hanging out during an engine change on a 182 ate up a significant portion of my afternoon. Our DOM told me that instead of 5606 he uses Dow #4 for stuff like this, and he loaned me a tube. It has the consistency of vaseline and a little dab on the end of a Q-tip was all I needed. After I got the valve back together, I started playing around with a mounting solution. I think I have something that will work, but that will be a project for the next log entry.