Folks I dont really see much trouble to mantain bushings it propper time, we here pay much more dear for original backhoe parts cause they come with an extra tax. But it is worth it. Most important is to keep on in your field of business. When your back hoe or operator can do things that other refuse or can not, one becomes a man in demand. Once client hires you, he is gonna give you coupla more clients. Most contractor back hoe operators here are afraid to use a hydraulic hammer cause they care for a boom. I say it is bullshit, as long as it pays, work it. I use hydraulic every week three or more hours, got spoiled only one bushing. the one at the end of the arm. But very often ppl hire me cause I have a hammer and after I finish the job they give smthing else to do. to load the mess, do a crane works.