Xyzzy,
After you finish any manual batch of P-1 tests, how about trying the method suggested by Complex33 for semi-automating it:
http://mersenneforum.org/showthread....1671#post11671
It would make sense to do P-1 testing this way (for Primenet credit to boot).
I can still post Pfactor= sets though for those who want them, in higher ranges well away from the leading edge of double-checking.
I have another idea though (not P-1) that will require some manual Mersenne-ary work. I'll describe it in another thread.
[Edit:
this thread (message) in particular].