Got any tricks? It seems that every couple of months I get one that just decides to start backing out. Never the same one, it can be any of the 4, sometines all of them. Has anybody else had this problem? Its not that big of a deal, but I would like to find a solution to this eventually.

If the threads are good in the heads (if they aren't, heli-coil them), then this shouldn't be a problem. The trick is to have a good OEM gasket that has some "spring" to it, and to have either good lock washers or whiz-nuts that resist loosening. I would replace your gaskets with a dealer set, get some whiz-nuts in 10x1.25, and probably heli-coil the heads being that they have worked loose so many times. The Aluminium threads in the heads don't last long once the studs have been in/out a dozen times.

 

GD