I had brought my Husqvarna 535 into the shop when it was 1 year old for warranty purposes, Larry did his thing with it and told me I was doing a fine job at keeping the self-cleaning area's clean and to just keep it up. When the 2nd year rolled around I brought it back thinking I had to have it cleaned yearly. Larry took it and called me back a few days later and said "I must have forgotten to write down the problem you were having with the machine and I can't find anything wrong". I told him it was just in for a cleaning. He said "What on earth for?". I picked up my machine and a bill for $30 cause all he did was look at it and telephone me then put it right back together. He told me to stop doing that. He said if I kept it as clean as I have been there should be no reason to bring it in to me unless it needed actual 'servicing'.