NO NO NO, none of the ones you circled are it. it is(2" in the pic) below the blue circle...... its gold and has a spring under it....and a rod that conects to the diaphram.......
and please tell me your not really a Doc
and please tell me your not really a Doc
Doc said:It's OK, I think I've got it. This morning I wasn't using a flashlight and didn't see that screw down there. I'll check again tonight.
Thanks John.
PS, I just used photoshop to make a crude circle.