goin through 3 turbos in a year!
you priming them after fitting?! cus doesnt sound like it!
I would suggest dumping ya engine and starting fresh with another one! theres loads goin about! or bite the bullet and go for a full rebuild!
mines over 200bhp and i cane mine everywhere! and dont seem to have to many problems (touches a large lump of wood

) tho gotta say when i 1st brought the car all i got was problems!