I am currently working on building a stir plate. I have a 12 volt power supply and a 12 volt .3 amp computer fan. I have a 10,000 om pot switch. The fan won't work until I turn the pots with all the way up . I read on another post that if I use a 50,000 home pot switch that may work to better control my speed. I have already epoxy the knob on to the pot switch and would rather not have to change out the switch but I will if I have to so I guess my question is which pots which should I use if I have to and is there anything else I can do to control my speed with my current setup. Thanks in advance and I know my fellow home brewers got my back on this one