In the ongoing saga of trying to repair my spark plug tester, I have made some progress. It ain't easy. The hardest part so far was reattaching the blaster sand bag. It required pulling it over an edge that was a bit bigger in circumference that the lip of the bag. I dug deep in my repertoire of four letter words of encouragement and finally got it done. Next thing is replacing interior tubing. When I got started I found that I was one piece short. Now I have to get in touch with the company and get one. These things seem to drag on for a long time.