As I posted, about a week ago, I was having problems with the lower clamp holding the blade (like plain end #2) on my Poter Cable Scrollsaw. After some discussion with Poter Cable they are sending me a whole new lower clamp assembly. However it is the same as the one I have and my fear is that it will not address the issue. You see the real problem is that the thumb screw is under the table and you need to reach around the left side to tighten the screw while holding the blade through the hold in the table. Several, very knowledgable scrollers suggested that I file the end of the screw just a bit and that helped to some extent.
So, thinking out side the box, I realized the the issue is the ability to reach the screw and not the screw itself. I went to the big box hardware store and found out that the screw thread was an 8MM. So I goes down the isle looking for anything with 8MM threads. The only thing they had were hex screws about one inch long, so worth a shot. Came home and removed the burr off the end of one of them and found a screwdriver that fit a hex socket and a #10MM socket to thighen the screw. This seems to work just fine in my test last night. Today I start scrolling some larger projects and we will have the final test.
Lesson I learned, If it does not work in one method look at reasonable alternatives.
-- Just learning the craft my Lord and Savior Jesus Christ practiced.