I run into these a lot really it is the norm. But I am trying to decide what to make of the push/pull shut-off valves. Often times at least 50% of the time you push/pull the valve to open and close it and the PEX is pulling out and pushing into the wall. Usually to a lesser degree.
The twist type valves seem to be better. A lot of the push/pull valves take considerable pressure to move. And I wonder if this is only to get worse over time.
Interested in hearing opinions from other inspectors.