Last time I tried to disassemble the drag assembly, it would not budge. The LH THD screw (the winding knob spindle) turned and turned, but went nowhere. I gave up, washed out the salt, and threw the reel in a box.
The spindle gear assembly is held in place by a simple split ring (first photo) on top of a washer stack. In the middle is a ball bearing thrust washer to keep the spindle gear aligned (second photo). The spindle gear, winding knob, and drag adjustment knob all appear to be nylon.
In reality, the winding knob spindle (part 1 in the third photo) was pressed/swaged into the drag cover (part 2). There is no sign of a thread. This explains the
return for service note in the reel instructions (original post, last image). The drag washers (part 3) are leather. The drag adjustment knob turns the threaded nut into the hole in the cover plate, which compresses the spring, which in turn compresses the drag stack. My drag adjustment knob is cracked and will need repair before reassembly.
Other than the screws, spring, and a couple of washers, none of the parts are magnetic - not even the drag gear (part 4). I may have to send the reel to bulldog1935 to identify the metals. I think some are stainless steel and others are copper alloys. This reel was not designed for typical owner maintenance.
Tom