Tom Frobase, N3LLL, makes an excellent replacement for the 6743 local tuning knob. See it in action here:

https://youtu.be/hTXW8KWkFsA?si=dU1oNRZiAgyhW07B

It is available on eBay:

https://www.ebay.com/itm/266336195557

I am only a satisfied customer sharing information.

Dave N9ZC