ive got a new way of heating my shafts gently
i turn on the gas grill on low and close the lid,let it preheat to aboot 350*
then i open the lid just enough to fit the shaft into the grill and keep rotating it
after aboot 30-45 seconds the entire shaft is heated evenly and all the way threw
then just gently end and hold the afected area untill cool
and wa la a nice easily straightened shaft