Fantastic job on the rebuild, I'm currently working on a '72 U08 saved from the dumpster. I was proud of my progress till I saw yours. So much more to do. I also found a non-working Ventolux pump. A mechanic a the local bike co-op said he thought the original seal was leather so I cut out a disc from an old belt, soaked it in Neatsfoot overnight & it works, but only to around 45PSI.