Well these do have their moment of greatness like I said. I'd like to see if I can't do something to get these sorted out. I need to verify that gauge.. also remember reading I thought somewhere on the Edelbrock that those step up Springs and their numbers are only half numbers of what the vacuum is? As in when it's a number 5 it's for 10 lb of vacuum. which kind of makes sense cuz it only goes from 3 to maybe like 7 or 8... What's your problem