doh! i kinda thought as well that the scores were too circumferencial but the instructions at the back of the hone said run at approx 2000rpm! i had the hone going at 1200rpm and i was vigorous with my 'pumping' :P, i guess i need to slow it down even more next time?ight switch the drill to screwdriving mode as this is roughly 400rpm)
also, any tips with those loose blades grumpy?