I am posting to draw attention to what I see as a potential bike killer if a solution can’t be found. Ripped diaphragms on the 94 – 03 VF750C and the 90 – 97 VFR750F. This is very odd but I currently have a rebuild rack from one of each with all 4 diaps pinholed/ripped/degraded rubber. No one offers an aftermarket diaphragm. I ordered a set from China that looked right but coded to a different bike and they are too small. New slide assys from Honda for the Magna are appx $140 each. At the moment everyone seems to think used racks are worth $300 - $400 and even buying one does not mean you end up with 4 good slides. I keep old bad slides from rebuild replacements. I tried removing bad diaps from a couple and it is a struggle. I destroyed 2 of them trying to get the diaps off. I cut one in half and I swear it looks like the retaining ring is a cast with the entire body part which eliminates popping off the retaining ring. So, I am looking for input from bigger brains than mine. Help!!!