Hello,
I recently purchased a 57 Skyliner and although the car runs well I noticed the secondary's are not opening. This carb is the AFB vacuum secondary style; not the Holley. The diaphragm was hard as a rock. Anybody know where I can purchase one? I have searched all over and have failed. I was told the Part # is BTA-9503-C.
Any help would be much appreciated.

Jack