1/2" Copper Hot water supply -> Gate Valve -> 1 inch length of 1/2" Rigid Copper tubing -> 1/2" to 3/8" Copper Reducer Coupling -> 3/8" Flexible Copper tubing -> Dishwasher. I have to redo the tubing connected to the dishwasher. Can I heat the Reducer Coupling so that I can replace it without affecting the Gate Valve joint?