imho---if/when youi get it the !st thing to do is go to the fletcher site And order 1/2 doz bushings, 2-3 l & r side springs, 2-3 nuts/curved washers(for ens of bar)... & put em IN THE OLD HEAD!!!
I've been having VERY annoying problems with mine(only @3 years old) and went this route rather than selling it & getting another----actually works like a new machine!!!(no it's not just my imagination) something about the old bushings--no amount of adjustment could eliminate the play in them....Its cutting straight lines(NO hooks) just like it did when new......only cost @ $25(ordered wall cutter stuff too) but wish I'd dont it llloooonnnngggg ago