The T&D rocker arms I had made for the Trick Flow heads were supposed to be 1.70 ratio. They ended up being 1.65 ratio. I called and talked to them and they admitted the mistake and offered to build me a new set. I said don't bother and it ended up not making any difference. I dyno tested them back to back against another set of rocker arms that checked out at 1.70 ratio and there was zero power difference.

The T&D rocker arms were the best shaft rockers I've ever run. If I needed another set of high end rockers I'd buy them again in a heart beat. I think the latest version from Hughes is really nice too. The Hughes rockers tend to check lower than advertised so just order one ratio higher than what you need and you'll be happy.