Hammer--Sounds as if your BT99 just needs a basic trigger job. They will smooth out the action and/or lighten the trigger pull. I'll promise you that if you have it done you'll swear you have a high dollar trigger installed when in reality they just cleaned up what you already have. You mentioned the high dollar K & P guns with drop out triggers. They are easier to swap out a trigger. The BT99 would take a gunsmith to change it out even if they were available.
There is no aftermarket trigger, it would cost too much. You need a different excuse for missing, try " the sun got in my eyes." The trigger can be improved, especially if it has creep. I would avoid having it lightened. Your problem sounds psychological.