My springs have about 20 miles on them now. Here are my fender heights so far:
FL-27 1/16
FR-26 15/16
RL-27 3/16
RR-27 2/16
BTW I found that the autozone rental compressors only worked if I attached them as pictured:
Spanning 3 coils on either side did not compress the springs enough in my case.
Its a baetch to get the compressor spanning 4 coils off once the springs are uncompressed because the top arm of the compressor is wedged in the coils pretty tight. Its doable though.