'79 atc110. The engine for the "scrap 110". What's an easy durable fix for the insulation of the wires where they exit the case rubber grommet? This is gonna be a rider, so durability and waterproofing are highest on the list. I dont care if it looks different than stock. Don't want to lose spark while splashing thru a puddle! The wires seem sound, but the insulation is cracked and the wires are exposed. Shrink wrap?