Typically T1 & T2 move a bit and it's probably due to the fact of the fine strand attached to the other end of the bus. It's not a big piece of bus, so it tends to wiggle a bit.
Last one I took out that was like that was tight as tight can get.
Would be nice if the screws were on the front side though.
Having to remove the whole contactor is a PITA.
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I agree. I am sure Generac torques all of the lugs. The problem is that they cross thread the machine screws and that leaves the lugs with the correct torque and loose.