A trick I learned the hard way is roll the pot in either direction to the max.
Then solder the ground towards the middle
This way you don't burn the wiper or tracer
Another trick with multiple ground wires i solder a 6 inch wire to the pot.
Then splice in the other wires to the other end. I like to use wire nuts and black tape them
Same for the lugs and caps
Avoides the big clob and next pup or cap swap i don't have to touch the pots at all or need the iron again
Just undo the wire nuts