holy shite ..... i found the problem

!!!
I bought a .63 hsg and fitted it the other night and still i had the same probs

Then i went to undo the actuater bracket from the compressor hsg and one of the bolts just spun round and round( stripped thread), this has been allowing the actuater to not hold the wastgate shut fully!!(as its been flexing where its not secure)
re-tapped the comp hsg, reset the preload and behold 28psi and holding
now i remember why its all worth it

.....hehehehe
its a missile again
Pugo