God-awful drop rate. Something like 0/10 solo as BST and 0/15 or so with a THF helping me. I'm beginning to doubt that Blaggers even drop them.
Edit: Finally got one after about 30 kills, about 20 of those with a 75 THF along for TH2. Pretty rough.
Edited, Aug 18th 2006 at 4:14pm EDT by OmniChange