Need some advice. Our Maxwell windlass has a flathead slotted machine screw that secures the winch assembly onto the drive shaft. That RH machine screw will not loosen. I've tried PB Blaster, tap-tap-tap, and more PB Blaster. No room for an impact driver. So my question is, will a butane torch get the screw hot enough to help break it loose, or will I need something hotter?