Update. Could not seem to get enough angle from the top to get a decent chamfer. Spot annealed a file so I could bend it and worked on the lugs. There seems to be improvement and it is cycling better. I think at this stage I will stop and study up on disassembly so I can get a better angle on the top of the lugs.
Gundoc, thanks so much for your expertise and patience much appreciated.
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