Sounds like a factory defect to me, assuming you have the M98 version you might also have your bolts too tight. Old 98C's are known for their funny threads that casue barrels to point at odd angles(hence why Tippmann recently added an extra thread to the recievers), maybe yours just points down. Do other barrels do it as well?
Could we spell it correctly...please?
Take a look, you might be surprised.