Mike,
I believe you must have misunderstood me, and I don't want others to get the wrong idea.
The Trick Flow heads have the rocker stands repositioned for to have geometry more suited for a roller rocker. It can't be right for every application, but it is much closer than other heads on the market that copy the stock head. The 273 rockers, or any non-roller rocker for that matter, are not recommended for the Trick flow head. The reason it looks better with the spacer is because the 273 rocker is too short for that stand position. When the shaft is raised, and it is already too high for that rocker, it may center the pattern, but at full lift it stands the rocker up on its nose and scrubs the valve tip excessively. Over time it will wear out the guides, just like a stand position that is too low can do. It will pound the seats out of the head prematurely, as well, from the high valve closing velocity.
I've heard reports that Trick Flows tech line has said that stock rockers can be used on their heads. That is contradictory to the information included with the cylinder heads which states roller rockers are required.
Give me a call when you have some free time. I may have a helpful option for you in the near future.
