Hi, I am new to your forum. I have recently purchased a Bosch palm router PR20EVSK. I have a lot of 1/4" shank bits which are required for this tool. However, the collet opening at the top appears to be smaller than the shank and I cannot get any of my 1/4" bits inserted. Any ideas? Don't want to do anything to a)destroy the collete; and b) get hurt operating this tool. Any and all help would be apreciated as I have an urgent project to finish up. Thanks in advance for your information and assistance.