It is only 10$ on a 911 forum

.
The price of a fancy pint of beer with tip.
The guy seems like he's retired and used to be a FoMoCo troubleshooter. Seems to know his ****************.
Indeed, using an off the shelf diaphragm, that does the regulator part, leaving the original AOS there for the vortex part, blown or not blown.
Just that is a solution to not have to remove and mess around with the AOS anymore.
His can with infra red warning, is just a nice to have for early warning.
Its interesting in any case.
@Maytag Which was the solution you ended up going with?