Broken Trim switch DX6I

Question

Two months ago I sent my DX6I in for a broken trim swith,(throttle). Yesterday it happened again. Not wanting to spend $20.00 for shipping again, I opened the back and found the problem.Looking at the throttle trim switch I found the spacing where the rocker contacts the 2 button switches, the gap was too large for contact.\This is the second time this happened is there a more robust replacement trim switch available ? or how do I permanitely fix this one?