Tubs sometimes are bumpy at the valve; old skool fix was to dremel the valve hole a bit deeper on alu rims so it sits a bit deeper
That may well be the answer in this case...the finishing was a bit scruffy on both the spoke and valve holes.
increased stretch at valve when fitting helps too
@dubtap started
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Tubs sometimes are bumpy at the valve; old skool fix was to dremel the valve hole a bit deeper on alu rims so it sits a bit deeper