Have you tried setting the TRV to its lowest number? This may increase the gap between head and W/M.
I would remove the TRV, rotate through 90 degrees so the head is vertical, and then replace.
Drain down and remove the trv, then refit to the other end of the radiator?
Andy
I said that.I would remove the TRV, rotate through 90 degrees so the head is vertical, and then replace.
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