No, I have no tool to check it, but I was there with the mechanic the whole time and he didn't pump air or anything like that. I rode about 300 meters to the shop after I got off the bus, and it felt different as soon as I left the shop. The dérailleur also leans to the right side now - why is that? It's on first gear... I think its too tight, which is also why changing gears is much harder now, but I'm still a newbie in this so I'll wait for more input.