Sorry if the title is a bit misleading but what I am wondering is how important it would be to replace and inspect the tensioner arm itself? I only ask you guys because I saw a guy on YouTube rebuilding his 4g and he said that if you slide your existing arm on and can feel side to side play or back and forth play without the arm itself moving it has to get replaced. I assume this is something major and because I will be going back to redo my cam seals, balance shaft pulley and idler pulley I am considering knocking this out as well. The same guy on YouTube also said that the round machined cylinder that this arm rides on over time wears down and apparently your screwed if that happens unless someone were to fab a bushing insert to make it true again. I feel like the auto tensioner would take up any random slack but im no expert. What are your thoughts on this guys?