ive been driving the car around for the last few weeks everything running spot on running about 13 - 14 psi when today on the way home i gave it a boot and it boosted right up to around 18 psi which cant be good for the poor little t2! so i let off and drove home like a normal person

. checked all the pipework everything is as it should....any ideas? possibly actuator? i discovered the nut on the end was slightly loose but you cant wind the rod by had so couldnt see it being that? only other thing i could think of is maybe ive put the pipe from the carb onto the wrong carb top port as its curently on the port closesed to the bulk head. but its been set up like that for weeks now and never this problem.
cheers