Here's a working auxiliary air valve - bought as part of the 924 resto a couple of years ago ...
It does what it should and moves round when hot and cold ..
Looking for £30.00 posted ...
'89 944 S2 Cabriolet
Aprilia "Falcuono" road weapon, KTM LC4 400E Desert Special for desert adventures, an RD350LC nostalgia generator and an RG500 mortgage extender.