Heads install
-Used air to blow out all the coolant and **** in the holes.
-Rolled up half a paper towel, twisted it down in there, picked up quite a bit of grime.
-Took an old head bolt, put it to the grinder and ground down two sides to it, threaded it down in there, twisted it back and forth a few times when it was bottomed out, threaded it back out.
-Blew them out again just for good measure.
-Presto, clean bolt holes.
The shop vac with a straw attached sounds like a good idea, I just didn't have the room in my garage for the shop vac though.

