I convinced my buddy to buy the OF1010 and he called me to let me know his 1/4 bits don't fit. Since I have the 1400 I was a bit perplexed. He said there was a 1/4 collet in the systainer but he has no clue on how to change them and surprisingly there's no mention/instructions. He's prying on things so I told him to hold on till I could see if anyone knows how to change out the 8mm for the 1/4?