Hey guys, just wondering what others with this machine do to upkeep it. I am talking about in terms of cleaning, greasing, tension calibration, etc. I have had the machine for two years and have never had to calibrate it. I test the tension every couple week with a tension measuring device and it always stays spot on. I was in the store the other day and they use the prince neos and they said something about cleaning it every day? The only thing I do is spry it with wd40 every now and then to keep things moving smoothly, but other than that there is nothing else I do. Is there something I should be doing?