There were probably more backs ruined on 600 MEP, 2400/3600/7000 developer housings than in all the gyms in the country combined....I remember many days of almost having to call for help to get out of my car after 2 or 3 600 MEP calls or a couple of 3600/7000 developer housing lifts...The 4000 family was another back stretcher, along with a few years of working on my knees in front of the 1075/1090 family...
Boatbum