Hi folks im new here so bear with me, I am capable of doing basic electronic and mechanical repairs to most things in life, but im stuck on this:- The gys welder im working on at the mo has a red, white, and black wire going to the board that has the wire feed speed potentiometer soldered to it, someone had snapped the knob off the front taking with it the shaft of the pot. I replaced pot like for like ,mine was a 100k, and i noticed a small trim pot soldered to the board on the black wire side , which makes the resistance between red black adjustable and the resistance between white and black adjustable . The reason im asking is i may have accidentally turned/moved trimpot while handling which will alter two of those resistances as stated earlier. This has to be there for a reason , does anyone technical know the resistances. I can roughly alter main resistance of pot from 100k to 105k or 95K and i can alter zero ohms on main (middle pin and red) connections to read 4k when wire speed pot is supposed to be on zero. I need clarification on this i dont want to damage main board. Any help would be great thanks.