Countersunk Screw

Hi Roger,

"....take my small butane torch and heat all around the outside housing the screw is in."

Bit concerned about the naked flame residual fuel/fumes

Just wondering - 

Would a heat gun be as good? Would it heat too large an area? 

Why don't you heat the screw directly? Heat & cool a few times?

😈

Take the carb off. Put it in a vice with a cushion on the edges. I've done this several times. A heat gun heats up an entire area. The butane torch heats up only a specific area and quicker. The heat on the carb body edge around the screw will help expand the metal and help loosen any corrosion.