Ok, so today went to swap the gauge over from the second unloader to the first, and realised it had no glycerine in it, thought the needle shaking was due to the same reason it was getting hot, swapped it for a new glycerine fille done and no needle shake and it just gets a bit warm, but im guessing thats due to the way this machine is set up.
Need some advice on that so im starting a new topic with a pic.