step 17 in the manual calls for putting a "dust cover" over the steering servo. iust a flat piece, shaped like the steering servo 'compartment' and held in by friction and/or the front gearbox, i guess. but I don't see any such part in my box. I assume i'm looking for clear lexan? when I search the interwebs for "boomerang dust cover," the best result is a clear plastic cover for a mechanical speed control. which I do have, in addition to the body, "chassis cover," and wing. this "dust cover" looks nothing like the "dust cover" in the instructions, and couldn't be cut into one if I wanted to... am I missing this piece? or is this step in the instructions just left over from a previous version of the kit? why do I have a dust cover for a mechanical speed controller? should I just cut a dust cover from scrap lexan from the body?