Hi Don,
Several top-end gunsmiths near me have recommended this product. I had a similiar problem as you have...applied several applications over a 2-3 day period (as Dwight stated...) and the screws came right out without much effort from my screwdriver.
http://www.storesonline.com/site/598...duct/AeroKroil
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />