We have a shower control something like this: Ecostat - S Thermostatic Trim with Volume Control | Hansgrohe US
with a knob/handle that rotates to control the temperature and a push/pull rod that diverts the water between shower head/lower spout (the latter is different than in the picture shown). Is it normal for there to be some flex/"slop" in the
position of that temperature control knob/handle?.....that is to say, if I hold that knob between thumb and first finger at 9 o'clock and 3 o'clock should I be able to wiggle that knob side-to-side a bit or should it be perfectly rigid?
I normally just rotate the handle but something in how that movement occurred motivated me to try that side-to-side test. Hopefully those words paint enough of a picture to convey the question.