2007 navigator ZF6HP26 lock up problems

[bobs71]

Resent rebuild worked good ,,, 2000 miles later came back with tcc trying to engage when put in gear forward and reverse. checked wiring ,changed convertor ,changed solenoid 6 ,checked for sticking valves in VB, and tried original tcm. still have same issue. can find little info on fluid flow to tcc. think I may have cross leak but not sure where to look. Never had problem doing this trans before .. stumped in Missouri !!!!