Gotcha. That is a tough one. You definitely understand the problem. As you stated, you loose some of that stroke on the hand off.

You would either have to move the Trigger(or the trigger sear catch) forward or change the ramp at the top of the stroke. I would give Fred Moreo at Sharp Shooter supply a call. I don't know if there are any user mods that you can use without risking damage. Unless you are well versed in annealing and tempering, I don't think I would mess with bending the sear.