It has been a 25 years...and I don't have my notes re modifying a standard trailing arm bracket to allow camber adjustment.
However, if I elongate the pin hole upwards 60 thou, will this be close to 1 deg. negative camber?
I also plan to add a 1/4" lock bolt - big washer for pin end - and welded horizontal plate with 1/4" through hole for the lock bolt.
Old school but it worked.