Help with convertible lift system

Just sent my switch in for a second rebuild(5 years since first rebuild).this is his response "What I want you to see it the amount of arcing occurring. This switch is really getting hot while in operation. I would inspect the wiring terminals on the switch and motor side. I believe there is something causing a restriction of the DC current.". What do I check? Is there some tests I can do to the motor? When going up or down it does kind of stop for a split second. I do have a relay kit coming.
Thanks
Aaron

Get your switch rebuilt again, check all the items mentioned above and then buy and install Crackedback's top relay harness and you will never have to touch it again.

His relay harness does the heavy amp load lifting, while the switch only handles the trigger voltage to the relays.

He's the same guy that build the headlight harnesses, and a quick search on here will easily allow you to resolve this issue. He puts together very nice quality harnesses.