I spent 90% of my career working on the Otis Equipment..we started with the B-base and worked up to everything in between up to the Gen2...Haugton,Westinghouse,Payne,Thames Valley.had tours of each.
Recently added alot of DMC,Tac20,sand Swift Futuras as well..the Dover equipment from the I2,I3 valves to the limit tree switch problems..as well as the Viscoscity problems..keep you busy..would greatly trade add on 10 211,s for 1 dmc or Tac20 anyday..the211 is very well engineered, prefer the old Gen2 to the New Gen2..the 335 was a very sound and reliable unit..don,t know why they stopped production...thats my opinion..