I've been driving it to work this week, and some last week, and it doesn't seem to have gotten any worse, so that's a good thing. The other good thing is that I think the advance in the IP is correct, since there is just a tiny bit of smoke on start and cold idle, but I can't image it's anything bad. It's MUCH better than it used to be. The tweak didn't change anything else, so I must have done just enough, but not too much. If I find any reason to reset the timing on the pump, I'll take the steps to do so with a gauge.
However... My MPG was 17.8 for mixed driving this last fill-up. And although the pinging sound has not got worse, it is still there at idle, as soon as the engine gets a bit of heat. I'm not smart enough to figure out how it could be.... but it seemed to be worse when I had the valves tight, and now that I backed off, the engine is a bit louder all around, but the pinging knock is not so bad.
The thing that really bugs me while using it on a regular basis is that about 40% of the drives are absolutely butter smooth and quiet and powerful.... the other 60% feel louder than they should, more vibrations than there should be, etc... It's really annoying to have a 15 minute drive where you can talk to someone at a normal level, but on the way back the truck is so loud the passenger just wants out, and has to plug their ears.
To be honest, I really just want this done with. I have managed to get a few weekend drives in, but I bought this truck to do multiple night, overland trips; instead, it is pretty much the thing that is keeping me from doing what I bought it to do. So I'm taking it in to Ship's on Monday. Kind of feel like I'm giving up. I'm not sure how to proceed if I can't get some resolution.