Well, it worked. I had a pressureless can in the morning, pulled the rest of the top off, and now have some useable material.

I appreciate all of the approaches that everyone shared in this thread. It is amazing what one can learn from the diverse experience and practices of others. I guess that what makes this place so valuable to me.

Carl,

Sorry for the delay in responding I was out of the office for the last ten day's.

Joe hit it right on the ball dented the older cans and that is where the puncture happened. They used a larger ball and thinner cans in the older model cans and that could have been the reason for the change.