Very easy money to spend when you have exhausted other methods. I do not disbelieve those who have never had an issue, but the amount of people who have struggled with this can't be overlooked. I know all too well the frustration of something so simple being so hard to remedy. I tried various gaskets, various housings, re-machining housings, factory housings, machining intake surface, etc. The cost involved in that BS makes the Billet Specialties part very attractive.
