I had the exact same problem with my bow a few years back. The problem, like Cmdrmack suggested was infact the barrel was to tight. You might be able to check and see if this is what is up with yours by putting a dart in the main portion of your barrel and leaving it a few days, then test firing it.
Happy Birthday man. You need to post some more of your work, cause of how that stuff is wildly cool.
Oh and an aside, having to be 21 to drink would suck.
I noticed the Tech Target, in old style and new colors at my TRU here in calgary as well. This makes me wonder, if this type of Tech Target is only going to show up in Canada, and if that is the case, if we will ever see the Scout style TTG.
Just a point of interest, I'm pretty sure we in the NIC are the only people in the 'verse who call it "FBR" which I'm going to guess only came into use cause of type lazy people, like every other acronym.