I just dove back into playing with low deflection shafts, and decided to give an OB-1 a try. I borrowed my friend's shaft, and played a few weeks with it. I noticed a definite improvement in my game. Anyways, I decided to buy one myself, and went to the local rep for OB-1. I picked through the 6 shafts they had in stock, and found the straightest, cleanest shaft I could. I was shocked at the number of dark mineral spots in these shafts. I don't need my shafts to be snow white, but a dark spot definitely bothers me during my stroke. Perhaps there should be tighter quality control at OB-1. If I'm shelling out $220 for a shaft, I do not think there is any place for dark mineral lines in the shaft. Save those for the sub $100 shafts, or start labelling these shafts as factory 2nd and knock some $$ of the price of the shaft. Just a pet peeve. I was playing in a tournament with the new shaft yesterday and had to keep rotating the cue to avoid the dark spots.