Need some advice. Working on an early build TBL, and one of the micro switches under the MPF was not clicking or registering. The wiring was too tight making the switch itself have stress, and I beleive that could potentially be why it failed. After relieving tension, it appears to work again. We then checked all the others and three others were not clicking or registering. Wiring and mounting was fine, just pressing and playing around with them corrected the issue.
They work sometimes and then stop. Any ideas why? Do they need replaced?