When I reformed mine, I put a ceramic cube heater inside the cover & used a heat shrink gun on the outside. Took a good 20 minutes to slowly bring it up to forming temperatures.
As David said, welding gloves will make it much easier. Plan on a method of holding the new shape until it cools. If you don't, it is likely to go back to the original shape as it cools.
As David said, welding gloves will make it much easier. Plan on a method of holding the new shape until it cools. If you don't, it is likely to go back to the original shape as it cools.