Old-Biscuit wrote:
That's why one needs to try different set ups........otherwise you just start throwing parts at it
I'm not disagreeing with you, you and I are in agreement, nor did I "just throw parts at it"...I did as I stated in the first response to the OP's question in this thread , I checked tanks and hosing first, swapped tanks around etc...when nothing worked, I next replaced the red regulator...when that didn't work, I replaced the selector switch/regulator...that fixed it.
I took steps, why would you suggest I didn't and that I "just threw parts at it"? That's the way I took your post.
My suggestion was literally identical to your's...