Originally Posted by CossieRich
Pretty sure the wastegate penny is properly seated as there seems to be no problem with building the boost up (which wouldn't be the case if the wastagte wasnt seated properly i asume), it just doesnt boost as much as before

Here you are jumping to conclutions. You donīt know if itīs seating proberly if you havenīt checked.
Asuming is the mother of all f*ck upīs when it comes to troubleshooting.
I think there will be no problem building boost with a small leak. But getting very high boostpressures as you are running arenīt very easy with internal wg.