Most of the maintenance complaints came from technicans that were more used to other brands. Once you get to know it the Ensrom is as easy or easier to maintain than other helicopters in its class, but a bit like a sports car it certainly helps to know the critter.
Most difficutlty in holding track went away when the elastomeric feather bearings got fixed in 1994. Since the Enstroms have no airframe life, there are lots around that are 30 years old so some of the maintnance issues just resut from the helicpters having been around for many years without as much TLC as might be needed.