I'm planning on removing the chart and replacing the brass rivets with small screws as well on the old 2557-V which I just acquired - the chart is damaged - torn - by the movement of the QC levers, which makes me think that a prior owner messed with the formerly nice brass plate, and possibly remounted it in a too low position...
I'm not sure how that will play out as part of my restoration - which looks to be more complex that what the OP has been undertaking here...
I'm not sure how that will play out as part of my restoration - which looks to be more complex that what the OP has been undertaking here...
Not a great deal of wear. For my two cents of suggestion (please feel free to ignore as you deem fit) - I like your idea of polishing the groove tracks for the levers. I removed my threading chart by gently hitting the drive brads with a flat round punch. I tapped the casting for small (#5?) screws and replaced the drive brads with small brass screws. I locktited those just for safety,\.
Geoff