Finishing frustrations

Thanks for help on seat tracks- found all hardware and refurbished seat tracks wrapped up in old headliner- now I have to eat crow with my former upholsterer.

Has anyone got a template or drawing for the wood nailer pieces at the inside top of the sedan front window frames -especially the curved corner pieces
Also trying to find a set of front seat slide assemblies- the ones with the tiny needle bearings- my upholsterer lost mine- any suggestion on a good substitute if necessary? How about Cessna?

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812 custom sidemount beverly