Thanks again for taking time to respond. I am new to this site and computers and am still learning how to get around this forum and finding out all it has to offer. So far, it looks like a gold mine of information and a lot of fun. Did not know about this site before just a week ago, found it by chance, but will visit often. The study of the internal combustion engine has fascinated me since i was a kid, so this site is big time entertainment for me.