Rumor has it...this is the best place around to ask about BSA rifle trigger adjustment.

I tried to adjust the pull weight on my BSA by turning the Allen screw in the trigger shoe but I didn't notice much adjustment.

I'm curious if there's any trick to it...maybe it needs oiled (I gave the trigger a lighter fluid bath in an attempt to possibly free-up any sticking parts)...? Or maybe I just need a gunsmith familiar with BSA triggers to give it a check-up...?

Are there any aftermarket options?

Thanks - Jason