right,disclaimer here:i aint responsible for blowing your engine!!!
if you take the rod end off the turbo(split pin,circlip,whatever holds it on, off and pull it up!) then wind the rod clockwise up the shaft to shorten it.try 2 half turns then check the boost(dont just leather it up the road!go about 50mph in 3rd then lightly apply the brakes to put the engine under load,hence the boost will increase,you can then check the peak without goin 120mph!!!dont do this for too long for your brakes sake!then adjust as necessary by repeating the first step if too low or winding out if too high!simple fella.)