Thanks for quick replies and yes I'll check about air and bleeding the system by seeing if the cylinders move at all.
It is odd as the chassis has a straight rod to the ground and when the tires are on the ground I should have more movement as I am on the suspension (springs/shocks..) then.
I also hear slight popping noises and see small movement when no one is inside it and it gets very hot (over 95) outside. Does seem like air expanding and then compressing.
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