SKS windage adjustment problem

A buddy of mine told me a magnetic engine block heater throws lots of btu without worry of discoloration if you don,t relish the thought of a torch near your parts
 
What about a heat gun. I just picked one up a couple of days ago. What I'm really after is to fix it so I can use the adjustment tool in the field, otherwise I'll just leave it alone and guestimate.
 
A common problem. Oil the crap out of it and knock it with a flat nosed punch a few times to get it to move BEFORE you go the range. Once it moves, it will adjust easy.
 
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