What could cause excessive line pressure? my original pump (had no issues for thousands of miles) did the same thing - i swapped pumps thinking i messed sth up back to a stock OEM 7 vane- same issue... ATF puking out the side..
sth else - all I did was shim tolerances tighter, art carr shift kit, sonnax 2-3 accumulator and servo kits, and pump upgrades -
Stuck relief & regulating valves can cause high pressure.
I'm not 100% following, so when did the puke start, on servo install, pump change, or did you change everything at the same time and then it showed up?