Picked up an old B&D 12v cordless drill at a yard sale for 5 bucks. Battery charges and holds a charge but forward-reverse switch was stuck in reverse. Disassembled it and the actuation lever moves a switch in a circular track to change directions--sort of like pressing a piston to move the crankshaft a few degrees each way. Can move the switch with pliers but it's stiff enough that the plastic pieces have too much flex to move it when everything's assembled. Wondering what people have used with success in similar applications. Don't care for WD-40 as it usually gums up more things than it fixes long-term and the plastic parts mean anything overly aggressive might also cause more problems than they solve. Love zoom=spout turbine oil but don't know how it would work on plastic and directly in contact with electricity. Any thoughts from those with experience in such things? Not looking to replace parts--5 bucks is plenty to spend on a drill this old, small, and cheap to begin with, and if worse comes to worse I'll put it in forward, reassemble it, and just use it that way.