Hello, I have a problem I hope someone can help me with. I have a mini mig welder in which I broke the potentiometer that controls the wire feed speed. I did not see any markings on the potentometer so I replaced it and threw the old one away (big mistake). The new one is not correct as the wire feed speed is to fast in the lowest possition. The number on the poentiometer is B470K. I have tried reading up on this but I just don't understand it. Worst case scenario I spend allot of money and buy the whole circuit board with the potentiometer from the welder manufacturer. Thank you for any help