In ,
Joe wrote:

On Nov 10, 10:53*am, (Restless) wrote:

It's a brand new mini grease gun. *Need to remove a slot screw to
attach a flexible hose. *It won't budge. *I don't have access to heat
or a vise. *Any solutions? *Thanks

You need an impact screwdriver, like Harbor Freight 92481 or 37530. As
cheap and effective as these tools are, it is amazing that so many
have never seen or heard of them. They are a staple in nearly every
pro mechanic's tool box, especially those that still have to work on
older cars where it the brake drums were often retained by a single
flat head screw. Don't forget the penetrant, and good luck.

As in "Liquid Wrench" or the like - though I wonder how brand new is
something that needs such stuff.

- Don Klipstein )