This '77 Les Paul was in for a standard rewire. The pots were scratchy, and weren't cleaning up very well with contact cleaner and the customer wanted to install push/pull switching pots in the volume positions to split his humbucker coils. These pots work as normal controls but also have a switch that is activated by pulling them up. Gibson used a shielding can to incase it's electronics to keep out interference in the signal. We also shield electronics cavities, but use conductive shielding paint. Jeff mounted the new pots and "orange drop" caps on the original plate, attaching the bridge pickup connections to split to the slug coil when the pot is pulled into the up position. The neck pickup does not have 4 conductor wire which is necessary for coil splitting. We installed both push/pull controls on the customer's request since he will later be purchasing an appropriate pickup. When it was all done Jeff reinstalled the shielding can after replacing the missing mounting bolts. He also installed a bridge ground wire, which connects the bridge and therefore the strings to the common ground of the circuit. This also helps to reduce noise and interference. Now this LP is dead quiet, and has good reliable new solder joints and pots.