There generally isn't anything wrong with TC set triggers. However, if the sear-bar isn't in the same location when the L&R lock is installed as it was when the TC lock was present, then the function of the TC set triggers in relation to the new lock may change. You may find that the angle of upward impact is not correct to trip the sear on the lock. It's not a TC function problem, but would be a location problem, and moving the location of the set trigger would be the solution.
LD