1965 Dart 270 convertible!

So finally the drivers side of the top mecanism is in parts! The insect adjustment screw is stuck.
What have guys and gals used to open up the adjustment screws in the top mecanism??

Thanks FABO

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mine is coming back apart for cleaning and beading. so I'm going to try the "heat and wax" method everyone says works great ti get the adjuster screws to move
. we'll see. as for lubricant I use the Honda High pressure lubricant that goes into the drive shaft on the honda goldwings. it's a bit pricey but since you use very little it lasts a long time.