There may not be anything wrong with your guides, etc...

What exhaust are you running ? An aftermarket one which flows better can reduce the amount of back pressure the turbo is seeing, leading to a little more smoke than usual.

Also, Stu once said that while you are off throttle (or light throttle), there isn't enough pressure flowing through the exhaust which leaves deposits in there. As soon as you step back on it, the extra pressure is enough to push everything out, making it look like you are burning oil like no tomorrow.

Try and get a leakdown test arranged, it's a little more advanced than a compression test and the person doing it should be able to tell you what is leaking if anything