Hey Scott,
It should come off without any heat.
And no need for a pipe extension on your puller.
But you will need that big hammer like Dusty said.
Also, make sure you put the nut back on loose,
after you remove the washer.
This will keep it from heading "towards your toes like a bullet when it breaks loose."
Because it will fly, if you don't have that nut on....
Tighten up the puller with your bar.
Remove your wrench, take your hammer
and wack the puller adjusting nut end.
Tighten the puller and hit it again.
Repeat until it breaks loose.
