Does not getting a Barbed kit large in my first 3 years of tailoring, count? Granted, I've gotten about 10 since then, but with 2-5 tailors, getting BODs 1-2 times a day, it wasn't until we got the ability to get new BODs for turn-ins that I got my first Barbed kit large, and took 6 more months of filling and getting new BODs to fill it.
Trip before last, I turned in about 130 BODs, and got about what you did - but ALL FOUR of my spined kit LBODs were THE EXACT SAME BOD (wizard normal 20), meaning that there wasn't much of a chance to fill any of them - especially since the only smalls I got for it in that trip were 3 robes - didn't get any of the other parts, and didn't have any of the other parts on hand.
And, people claim that the UO Random Number generator doesn't have streakiness issues... jeesh...