I have a Bosch 1617 router and for the life of me I can't get the bit out. I have no problem loosening the collet, but it won't come off. I have shot the collet and bit with WD40, liquid wrench, struck the shaft with the collet wrench and nothing. I have also tried heating the nut and bit, but nothing. Any suggestions? I don't care if I have to destroy the bit, I have other round over bits.