Anyone on here got any experience with these sprayers once they get a few years on the clock? ie electrics etc. How do you get on with the sprayer? Thinking of buying a second hand one. Would need some 620 x 70 x 42 wheels if anyone got some if I did buy it. We run a knights 6000l eua trailed ATM which don't seem to be worth anything now I want to sell it........ and its in very good condition.