I told Chris to check the POS valve since you're only hitting 7 lbs. He has a line on some custom pieces. Also, since you just put the bar back on and now it is missing, having you checked to make sure you didn't crak a plug wire or are grounding out on the coil pack on the back side of the motor since I'm assuming your bar goes right over the top of it? Always check the last thing you did when a new problem arises that wasn't there before.
Rick