A kid in the local fb car club bought a blueprint 468 for his camaro. Now, I had NOTHING to do with it other than doing his transmission. He ate the ends of pushrods off on guideplates because they used cheap, chinese guideplates that werent deep enough (He didnt know why). Instead of fixing it, he sent it back, it did it again. I went over the second time and took a look, i told him the pushrod was clearly binding and not seated in the hole in rocker arm, amateur mistake IMO. He called them back a third time, they told him the only way to fix his problem was to upgrade to aluminum heads, I had to laugh, how about making sure everything has CLEARANCE!