hi, this is my first post on here. i have just bought a second hand clarke 135 te (red). it did not feed the wire. i took it apart and noticed a track in the pcb was burnt. i soldered a piece of wire in and the wire feed motor has started working but does not seem to be adjustable its just fast or flat out. also the wire is live all the time. if you touch it on the earth it arcs. any ideas what is wrong. i have a 105en (blue) that works but is a bit low on power, could i use bits of that to fix the 135 or could i put the transformer from the 135 into the 105 and make it more powerfull? any help would be great. thanks