Jiggle pin. So that’s what it’s called. Hmmm.
Well, my T-stat didn’t have that Jiggle pin, so I drilled a teeny tiny hole, maybe 1/16” in the T-stat instead.
I’ll pinch off the hose, use a thermometer, and run a few other tests and report back.
Bartamos, I have one of those HF temp guns. Works great. I had one of flat ones but got tired of the fact you couldn’t see the screen well while in use. Sold it and bought the much more convenient gun shaped version. Worth the few extra dollars IMO.