bingo noticed a very slight bubbling around threads. The valve needed adjustment it took nearly a full turn to tighten… This valve was installed by a shop and I’m not sure if any thread sealants were used. can Blue thread lock medium strength be used on valves? Thanks for your help every one by the way!!! I was avoiding to have to pull that wheel/hub off….In looking through this thread, I didn't see where anyone suggested pushing on the valve stem a bit while checking for leaks to simulate the force(s) on the valve stem when at highway speed. I have seen a valve stem that would leak at the base only when the end of the stem was pushed toward the rim.