Okay!
Finally got the pump off the car, just took getting really pissed off at work and needing a distraction to get there. Stuck the 12mm chinese head in with new bosch 1 467 010 410 springs, supposedly they're "the ****" and all others are not as good or something. Just didn't want to reuse the 10mm ones with 150k miles on them, and surely wasn't using the chinese springs.
KF setting was done by eye, as all three spring sets were wildly different in wire diameter, free length, and number of turns (oddly enough the chinese ones were the beefiest), so I used the thicker shims that came with the chinese springs and gonna hope for the best. It seems to clack over well enough.
K setting was 4.1mm, with the de110 camplate of 3.1mm lift, a little excessive, but I figure better more clearance than not enough (and I don't have extra shims) Fun observation, the end plate had an imprint of the 10mm rotor. I had stabbed it in second at 70mph once, and that's likely what did it, haha.
I still haven't taken the top cover off the pump. Last time just going to the pp764s I was able to make changes to pump voltage map and it did fine, figure why change hardware when software changes are good enough.
How likely is it that I will be having a runaway if I toss it in there as is? The fuel shutoff solenoid should save me even if it does run away, and the pump voltage map goes to all zeros above whatever RPM, so it will move the QA as far as it can to try and stop a runaway.
ETA:
http://vwdiesel.net/forum/index.php/topic,6427.msg133113.html#msg133113
for the k and kf settings that I was talking about
ETA 06-23-16, 10:27 PM:
Got the pump back in, and the Tbelt mostly done up, just gotta figure out how I got it tight last time. Might have made a spanner for it and then lost it. Oh well, should have the old tensioner laying about to make a new one off of. Heck, just got the idea in my head for an adjustable face pin spanner with a screw for the hinge pin so it can be locked down. Use needle bearings for the pins to get some nice hard metal... Hah, probably just bumblefab some junk together just good enough to work, to be promptly lost.
Bets on a runaway? Backed off the timing a whole crapload, was running 5 degrees of static advance, it's probably 10 degrees ATDC at the moment.
Still no answers on if I should be taking the top cover off and doing this hammer mod thing.