First and formost you just told on yourself. if you grease them they do not wear out that fast.i do not have problems with them at all. every now and then put some grease in them......those zerks are there for a reason. that idler arm works back and forth all day long and requires some lube. it is not a big deal to knock out the loose dust in the morning when servicing. it is when it is there long enough to get hard that the problems start. i align idlers on new machines and if greased it is as many as 4 years on custom cutters machines before adjustment is needed or those high dollar (maybe $3) bushings need replaced.you complain about the adjustment but take note that those green combines dont allow for adjustment and aligning one is a major problem( bend arm, bend combine etc). vstk