Lord mounts
I had quite a time finding suitable mounts for the smaller dynafocal cups. VAN'S no longer had a record of the part numbers. I ended up ordering Barry mounts p/n 94150-01 (lord has a cross reference but more expensive). The inner rubber part of the isolator fit the inner hole of the cup just fine, but there was a gap between the outer circumference of the isolator and the outer circumference of the cup that had me a little worried. I tried to find a phone # for Barry mount tech rep but no luck. Using the cross reference # for Lord I managed to talk to tech rep there, she basically said as long as the inner cup was a snug fit not to worry about the gap on the outer circumference. I can't vouch for these mounts yet the plane isn't flying. If you want any pictures or further info PM me your email.
Chris