Kurtis already gave you the information you need to resolve the issue with the 3080. Go look @ the service manual here.....
https://manuals.lddb.com/LD_Players/Pio ... RP1999.pdf.... and go to page 75. Since you're not going to have the equipment needed to really fine tune the adjustment like a real technician (equipment I don't have as well), you could still take the chance and wing it. This is where the centering adjustment is located....
If you don't mind taking a chance, get a screwdriver (not sure if philips or flat head) to access that hole, play a disc on Side B (have a TV on to see the picture), and turn the screw in either direction a quarter a turn @ a time and see if the issue improves or not (make note of where you started to get it back to the original position if it doesn't work). And as you are turning the screw, you should see the picture change in respect to crosstalk interference.
I hold no responsibility for what happens so if it gets all messed up it's all on you.