Why don't you return to Rider's Choice and let them have a go at it?
Because I avoid them at all costs but I just dropped it off. I did the soap, they did the soap, another shop did the soap, no leaks from stem tire or rim. Even three it in my pool. Nearly high sided getting off 407 this morning cause it lost all air. Il update with the cause if they find it.
centrifugal force on the valve stem, tire spins up fast, valve stem opens against the spring by means of it's own inertia.
... yes I am almost kidding but that is the reason some bikes have valve stems with a 90 degree crank in them.
Valve stems open the other way, by pushing in. Centrifugal force causes them to seal harder, not open.
No, they open by pushing in, not pulling out. If you look at an air chuck used to fill a tire there's a pin in the centre of it that pushes on the opposing pin in the valve stem - when the two meet and force is applied, that's what actually opens the stem to accept air.
Want to deflate a tire? Push the pin in the valve stem inwards, air releases. You can pull on that pin all you want (the same as centrifugal force applies) and it just seals harder.
You have the action correct, but your forces backwards. The faster the wheel spins, the more the valve core wants to fly towards the outside and therefore open.
You know what, I need to eat crow on this one, sorry. I'm visualizing how the valve stems rest on the heavy equipment I drive and indeed the stems usually sit inline with the rim on a MC. You're right.
OP, what you may have here is a failed valve stem. Go back to the tire shop that did the work and tell them what's happening - chances are they'll just replace the valve and the issue will resolve.