If its an automag bolt, it should fit, even if its an aftermarket one. If you do have an ANS bolt and an AGD bolt, use the AGD bolt. ANS bolts can cause issues. Sometimes they work fine and other times they don't.
Make sure the valve is installed correctly in the body, with the bolt spring on the front of the bolt. If the bolt spring is not incuded when you test fit the valve, the bolt can slide forward into the breach.
Make sure the bolt is fully seated in the powertube when you install the valve. If it won't properly sit back against the blue bumper, then you probably have the wrong powertube spacer, or it is installed in the wrong spacer-oring order.
Do you have a picture of the bolts?
Except for the Automag in front, its usually the man behind the equipment that counts.