Exactly, get in the ballpark visually, (ignore the dial) then refine by ear, using what LP______?
AFTER: everything else is verified, anti-skate is last
AFTER: Your system’s balance is proven by the CD version of whatever content you are using.
Then use the LP version of known content and known imaging
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Just last night, listening to a friends system, track 3 ... the left channel disappeared. Nobody walking around, nobody touched anything.
WTF
Turned out to be a loose RCA connector on the back of the Phono stage.
That’s why I changed to all LOCKING connectors, either Locking XLR (they all do not lock); or cables with Locking RCA connectors, or modify your existing cables with these connectors from parts express
https://www.parts-express.com/Locking-RCA-Plug-Solder-Type-2-Pair-091-1270?quantity=1
The channel disappeared completely, easy to be aware off, find and fix, but many times you can get a partial signal, unaware your balance might be off