I recently bought a Dynasty 200-DX TIG welder with a thumb control. I find the control useless because it is impossible to rotated the dial to the off position while wearing welding gloves. The dial has a bit of protection in the form of a lip that prevents accidental (and purposeful) rotation of the rather small dial. I would much prefer a simple on/off button and let programmed current ramp-up and ranp-down features work with post-flow gas settings. As it is now, I have to withdraw the torch to extinguish the arc, thus defeating all post-flow settings. Is there a way around this? I see nothing about a pushbutton option on the Miller website. Are there any 3rd party products that will control the Dynasty welder?