Can anyone show me some close up photos of the early Pope filter cap that fit on the top of the snorkel. I haven't been able to find an original so will try to make one that looks similar. I only have diagrams and one old photo, but they do not show it very clearly. Seems it also contained a small round felt filter of some description. It looks a bit like a polypipe fitting stuck on the end. Haha! (The main filter was housed down in that cylinder affair where the snorkel connects to carby, so essentially it had a pre-filter at the top and main filter closer to carby.)