No, take the first spring off and leave it, remove the piston ,and there is a spring under it, stretch it a little at a time until you get the results you want,

it takes a little trial and error.

If you look at it as how its working, the ecu will supply a voltage to your Valve, at the moment that voltage is having to much of an effect on the valve operation, so by lengthening the lower spring the valve will not operate as much with the same given voltage.

its really common over time for the springs to loose tension, so i have to mess around with them sometimes to get them working nicely again. With your valve being an aftermarket item it may have different spring rates or be set up differently from the oe item.

If the car is fine when its hot the chances are the tps calibration is fine.