Wanted to go to a bigger cam and install my Rollmaster timing set to see how my 57 would respond. Got done, it ran good and sounded good. The only thing I didn't like was you couldn't hear yourself think while you were cruisin down the road (I must be getting old).  So I decided to reinstall my old 270 cam from Mummert. When I took the cam thrust plate off, there was a nice groove about 1/16in. deep on the side facing the camshaft. The cam was OK, just a groove in the plate. I'm sure I put the spacers in correctly and even looked at my 57 shop manual just to make sure. The thing I didn't do was check the camshaft end play (what could go wrong). Looking at a stock cam gear and the Rollmaster gear there's a difference of about 1/16in. in width where it slides on the camshaft between the two, just about the depth of the groove in the thrust plate. Any ideas on what I might have done wrong? Anyone run into this before?

Dan      Kingman Az.      86409