Myself and a friend have tried the Cam Correct stuff....don't waste your time(or money), it doesn't work like the ad copy leads you to believe. I've even hunted down dyno info after we ran it, several guys have dyno'd with it and report it doesn't live up to the makers claims.
Basically comes down to the valvespring pressure through the lifter against the cam lobe keeps the chain tight on the pull side, and is a force far greater than the little spring loaded shoe can manage to exert.
if it actually worked, it would be in widespread use, everyone would know about it, just like thay know about every other speed part or tip that helps make power. The idea has been around in various forms since the 60's(my uncle tried a spring loaded cam gear(for variable timing) on his Sprint car in 1971, didn't work then either. They ended up just bolting it solid and using it like the adjustable gear(for easy cam degreeing. in a modern belt drive timing set.
I've still got a Cam Correct in the bottom of my tool box, make you a heck of a deal on it, pair it with a intake "Tornado" and you'll be so fast you will end up in a different time zone every time you jazz the gas pedal. Don't forget the fuel line magnet to a"align" the fuel molecules