Cheers Mate, that Header Tank is working perfectly....Thanks for that.
Yes, i still have a 3.2mm 'Jet' in the R Port, was planning on drilling that out to 3.5mm or 4mm to try and get my bost holding at 22psi...
Increasing the R port jet will only increase the boost spike, not the held boost.
Therefor you should either fit a smaller jet in the C port or a stronger actuator (or increase the preload of your actuator).