some RM03 questions

Hi All, I finally got to the RM03 I collected over a year ago from Italy. I did some cleaning of the main unit, and I have a spare absolute airfilter which I want to replace with the old one, which brings me to the first question..., how do I replace it? Apparently, the whole drive and actuator allembly can be lifted, but I can't find a lever or bolt to release in order to lift it. Q2 : is the drive a 'real' SMD drive, or a modified one? there are 2 flatcables running from the back, one wide, and one small. The reason I'm asking this is that I have heard that CDC made the drives and they did make those (model 99xx?) as SMD one's as well. Last question : in the drive is a pack, but I don't have an empty cover with a handle to place over it in order to remove it. I do hawever have 4 packs which are having their covers, and was thinking of using one of those. problem is, how to release it from the handle? Any info is appriciated :) Ed --