Last fall, the trim switch on my throttle stopped working. Well, just the trim up. Trailer and down work fine. Limits and selonoid tested so it's definitely the switch. I've searched everywhere and can't find how to remove the handle to access the wiring. The button for neutral doesn't expose a nut as I've seen on commander 3000. There is one screw on the back of throttle I can try to remove with offset screwdriver, but I'm stumped. Any idea? I can't find model number or any docs that show how to expose the switch. Local marina wants hundreds of dollars to replace and I just can't stomach the cost. Help?