IMO, the stand pads are just too high. My gut tells me if I were to whack .200" off of these Comps, it would start to push things back to where they need to be.
As one of the biggest problems with running big cams and springs has been the 4-bolt attachment points that were never designed for that load, especially in aluminum, the taller and presumably much stronger pads would seem to be a big improvement, if you can make up the height difference elsewhere (shorter stands). You seem to be fixated on one (conventional) solution, cutting the pads, which would unnecessarily take away the strength advantage, when the height can fixed without giving up the extra strength. I would imagine one or more of the established sources that supply aluminum rocker stands could come up with a kit, with some input from the major players, with the proper height to work with the TF heads, including the end stands. Gotta get outside of the box and look from a different angle. Personally, I would work pretty hard at finding another way than cutting the pads down and giving up the strength
I've never advocated cutting the head pads. I always cut the bottoms of the rocker stands. What you quoted was me saying I would cut .200" off the bottoms of the rocker arm stands, which is what I've traditionally done so far. Cutting the pads on the heads would cause more problems, like moving the oil feed hole around, etc.
I also would never advocate a solid roller with a 4-bolt mounting setup in aluminum heads. Recipe for disaster.
The TFS valves are +.100" over stock length. I use those valves. If I didn't use those valves, the rocker stands would have to be cut down even more. Using an even longer valve could pose more issues in other spots, such as pushrod clearance, etc.
This post was not really to come up with different solutions to the problem, it was just a warning to those thinking that they can buy the heads, bolt them on out of the box, and use whatever rocker arm setup they wanted.