my friend and I recently borrowed a Sealey Supermig 180 and were having problems with inconsistent wire feed. We realised that the spool was loaded the wrong way round. When we removed it to turn it round, a part fell to the floor, but we both saw it and it was the plastic sort of nut that tightens up the onto the small spring. But when we put it back along with a sort of collar, we found there is loads of play in the spool and we are not sure if its supposed to be like this? the worry is that maybe there was something else, like maybe a larger (outer)spring that we lost? It could of course be like that to help the wire easily come of the spool but it would be great if anyone could confirm for us, thanks, Glenn