Makita 2040 Planer

I recently bought an old Makita 2040 planer that needs some TLC. I’ve got a local machine shop turning new infeed/outfeed roller shafts (the bearings had worn all the way through and damaged the shafts), but my main problem is finding the inner screws which adjust the spring tension on the rollers. Makita must have two different versions of the 2040, because the parts diagrams I found on ereplacementparts.com & toolpartsdirect.com do not match my unit. In the online parts diagrams, they appeared to replace the inner and outer adjustment screws on my machine (inner adjusts spring tension and outer adjusts the height of the rollers) with a single threaded knob. Has anyone ran into this before? Does anyone still sell the inner and outer adjustment screws, or do I have to buy the adjustment knobs? If I have to buy the knobs, I fear that they will not work with the existing metal holders. In the online parts diagram, the metal holder (321945-2) and pin (256650-1) are listed as type 2, which makes me think there is a type 1 and that the parts are not interchangeable. Can anyone shed some light on this, or am I going to be making a return trip to the local machine shop for some custom parts?