I used the TC1001 adjustment several years ago.? No big deal once you find TC1001.? I my case I was off about 1700 hz on 432.? Got it alot close but without the dropper test equipment, can't say exactly.
Couple of hints.? Make sure the Ft847 is fully warned up as there is a slight drift from a cold start.? Can't remember exactly where the TC control is located but remember you remove the bottom cover to access.? Think it near the front, but not sure.?