Randy.....I didn't use a gasket to open them up, I relied on my extensive air flow knowledge .

Just figured what they needed/I wanted to do and had at them
Don't know what size they are, just trim the gasket to fit.

Put them on Compu-Flow's 1020 bench and was told his bench is actually 15 cfm shy of any bench he's compared with so this has been added into the numbers below.

.100- 80.8
.200- 155.6
.300- 217.1
.400- 255.2
.500- 290.8
.600- 291.9
.700- 300.1

Don't know what the deal is with the flow between .500 and .600