Okay---first question (there may be a lot of these). In the attached picture, you can see that the top of the spindle, (and consequently access to the drawbar) has the round black plastic cover on it. Following all the instructions, I went to put in a collet with a 3/8" cutter. But wait!!! The damn black round plastic cover doesn't want to come off!! I don't want to break something on my brand new mill, so I undo the 4 screws that hold the yellow cover (which the round black cover is mounted to) and remove the entire yellow cover. What do I see on the inside??? Well, I see the drive motor and the top of the spindle alright, but that black plastic cover is held in place with about a dozen plastic barbs which are molded into it.---Surely the evil mind that came up with this doesn't intend me to undo 4 socket head screws and remove that entire yellow cover every time I want to change a cutter??? Advise please---