mine is actually a little iffy too. the way its machined it has just enough slop in the threads that it can actually be shifted side to side a little even when tight. I like the barrel enough that i'm considering buying a kit that my friend has, but if i'm not paying attention to the tip alignment when i'm putting my barrel on my gun it shoots like crap. but when it is lined up it shoots very well.
so far I like the matchstik though I don't have the kit. I do have several barrels that will fit including a freak system that I am going to try. One thing I have noticed is that the borg shoots crappy paint much straighter then my cocker.
As far as serial numbers mine is 482 and I just got my gun last friday after a 5 week wait. Highest number I've seen posted was in the low 500s not sure what the real highest # is.
I have the kit and I don`t like the accuracy., I tried a Dye Ultralite and I think thats a better barrel for the Borg.
But I`m wondring, I just to play with a Boomstick on my Angel LCD, what should I buy ? Boomstick or UltraLite ?