canon color image runner C5180

Our small publishing company leased a new C5180 which worked fine for a few months, then it started making screeching sounds. The maintenance contractor fixed that then we started having a host of problems. You name it we had it: constant jamming, color inconsistency, skewing (lots of problems with this). The net result (over a period of 8 months) was the printer was out of commission more than 50% by the maintenance company records. We tried to get out of lease with no luck and am involved in legal action. If there is anyone out there who has had similar problem with this machine, I would appreciate knowing it. Or if you have had good results with it, I would like to know that as well. Perhaps we just got hold of a lemon.