Reinforcing Buzz Bee Big Blast Trigger.

Has anyone done reinforcements successfully on the trigger? If so can you please show me how you've done it. My latest batch of them is much better then the last and the amount of force I have to put on the trigger to fire is eventually going to break these triggers.

I have been thinking perhaps a coat of Epoxy in the weak spot or a complete replacement. If someone has done a replacement what did you use and how did you do it. I don't want to supply my friends with a batch of Big Blasts and the triggers break within a weeks use.