Dynamite

hey, just wondering if anyone can help.

on the weekend my scorpion tire truer's varible speed decided to stop working at a very convenient time of course... so it now runs at full speed all the time, so i thought it might have just been the trim pot... not having any tools to test these things out... so i swapped it and it still has the same problem.

the truer still functions correctly in every other way, on automatic or manual - i just cant control the speed of the tire cutting thingy

any help would be appreciated.