Double roller vs. Single roller

I'm old-school and when I think timing chain, the first thing that comes to mind is Cloyes. So when I rebuilt my 225, that's what I bought.

I gotta tell ya it was a BIG disappointment, There was about 1/2" slack when installed. (pictures in my resto thread somewhere) Sorry, I'm not going to go to all the trouble of completely rebuilding my engine and roll with something that bad.

I researched it and came up with double roller parts sourced from NAPA. But, had to buy chain, cam and crank pulleys separately, no complete set P/N. I was going to do that but then came up with the Rollmaster set from a place in California.

Wow, really nice precise setup, all steel, tight with no perceptible slop and there were multiple keyways cut in the cam gear every 2* if I wanted to alter the timing. and I think it was slightly less dollars than the NAPA-sourced set. Something I don't have to worry about for another 50 years.