So I got my TFS heads and was reading the tech paperwork they supply with them and there is one that talks about setting the rocker on the valve so the roller tip is centered on it (at 1/2 peak lift), and so that rocker tip travel on the valve stem is less than or equal to .080" (to minimize valve guide wear). My question is, has anyone not been able to use the pushrod length recommended for their head manufacturer? The directions say to measure the pushrod length then order them.