I picked up a Realistic DX-300 last year at the Valley of the Moon (Sonoma, Calif.) hamfest. At the time, I plugged it in and noted that the khz part of the display lit up, but the Mhz did not. It then went into the closet for later. Well, due to current events I now have plenty of time, so out it came. Plugged it in and the readout read "6. ". Uh oh. Took it apart and noted that the mechanical gear system that controls the Mhz section of the system was frozen (this rig has separate tuning for Mhz and khz) and that the preselector mechanism was frozen as well. A little isopropyl alcohol and Deoxit got the Mhz tuning going again, but not the preselector. While fiddling with it I noted that the outer (the part that the knob hooks on to) preselector tuning shaft seemed to turn, but that the mechanism itself did not. I quickly realized that some doofus had tried to use brute force to unjam the mechanism, and thus snapped off the part of the outer shaft that the knob hooks on to! So, I guess it's dremel time. I would like advice on how, first of all, to completely remove the front, as there are several elements that seem glued in place (like a knob labeled "fine tuning") or if removal is possible. Then I need to figure out how to dremel the broken part of the shaft off without wrecking anything else. Then it's back to the preselector mechanism, which is stuck fast despite enough isopropyl and Deoxit to make a nice little puddle on the bench. Any ideas?