Hi guys, i have checked on everything that that you told me. after cleaning the brushes, the machine started behaving itself. it however stopped after 12 hours.doing a further check on the machine i found out that the sleeve of the left limit switch was broken ans was completely sloppy. I actually need a new one but i could not read the digits on it. Is there anyone with the manual to give me the numbers so that i can order a new one?