d15b7 engine, went turbo 2 weeks ago, popped open the valve cover today to check out internals, i've got a lot of mostly side to side, some up and down play on exhaust rocker rollers for #3 and #4. what are the tolerances for them? should i just torque them back down to spec? makes me afraid to take it up to 7k on them, i dont wanna bend a valve or anything...