Yes I did and the hammer wasn't all that small!!! I used to be an engine builder for an after market VW company and at one point I had a set of tools for removing stuck hex head screws, sort of like easy outs but these worked. They seem to have grown legs sometime over the years and walked away. I have a machinest in my wood working club and as much as it pains me to give the engine to him to remove these nasty screws I will just have to lower myself. I have one more trick to try before I give up though. I have had this engine apart once and I never use locktite so I question how these screws got so tight in there. I know I cleaned all the threads on both screw and hole plus I torqued them all the same with an inch pound wrench. One shouldn't be any tighter then any other??? This is a first time for me having this problem with an old engine???