an easier way to check but you have to be very careful, but i set mine up like this and it works for me....set the actuator a 1/4 hole short and then fit.....remove hose from actuator to amal valve completely and then take car for a run carefully taking it on boost and recording results,if it doesnt hold what you need decrease length until it holds the boost you need.......i found that wastegate will open without hose connected as the pressure builds up and forces it open so you have to set preload knowing it will cope with the max you want......once you know that the actuator will hold the required boost,reconnect hose to amal valve and run again,if your maximum boost drops now you have to adjust the amal valve outlet to actuator....to do this i made up some nylon inserts the same size as original and drilled a 1mm hole through middle and then super glue it in place of original...run again and adjust as nessasary....smaller hole =more boost and vise versa......just be careful when setting up for obvious reasons

mark