So I'm battling a nearly not running motor that I have a rather lengthy thread about. It appears that I have at least half of my lifters that are stuck or frozen in the up position. I'm trying to figure out if I have to remove the Trick Flow heads to replace the lifters. I've read yes and no along with lots of threads where people never followed up after they completed their repairs, just looking for someone with good input, specifically regarding TF heads.