225 merc question

[jwclbi]

I have a 1998 225 EFI Merc with a trim issue. While triming the engine up the stainless wire at the midsection/lower unit smokes and heats up. I can not loosen the the nut at the bottom of the wire(rust) to clean for better contact. So I added another wire and grounded near the nut. But because of availability I was only able to find a galvanized wire for a temporary test. It works with no smoke and doesnt stop after 3 cycles, but seems to struggle at full tilt. question is does stainless cunduct better that galv?