Yesterday I discovered my rear tire was worn out to less than 1 mm of thread left, so I needed to chnage for the new one. I normally let it to be done by the shop, but this time all the near by mechanics were busy and could only find time for next week. But they said, if I take the wheel off myself and bring to them, then they can change the tire. I had never taken the rear wheel off myself, so I watched few tutorials here on the forum and got it off with no much drama. But the drama was more to decide, which tire should I go for. I ride 95 % pavement, but every now and then I also happen to ride on gravel roads and I planned to ride to my summerhouse this weekend, where there are also only gravel roads in vincinity. So after long deliberations I decided to go for Michelin Road 5, though they are not good on gravel, but then they are superior on pavement. I installed the rear weel back yesterday afternoon and somehow it did not turn aound very easily. Today I planned to do a small test ride and pulling the bike out of garage, I felt it was rolling very badly. I decided to look once more at tutorials and there it was: the bloody washer! You probably all know what I am talking about, its the one on the right side. For sure, I had set it into a wrong place. Had to pull the axel out again (did not want to come very easily) and set the washer in a right place. Now everything fit together smoothly and the wheel turns around freely. I was bloody lucky that I checked the tutorials before heading to my summerhouse some 300 km away! The brakes would have cooked for sure.