Ah, player lock is a good point. I can't say for certain, but I would guess that the User tendencies effect your teammates, while the CPU tendencies only effect your opponent's team. So yes, editing User tendencies for player lock should be viable.
I would try making the User tendencies equal to the AI, but keep Play Passing Lanes at default.
Glad to hear that your problem solved itself. Variety is a good thing, remember
Nice! What changes did you make?