Good evening people, last time on my Rs4 125 measured my valve shims and then installed everything again. Measured since the Shims have to be changed soon. After the measurement everything again installed, stuer time set, chain tensioner installed…. After the whole installation I noticed that the control chain is very tight. So again chain tensioner slightly out and back in. Nevertheless firmly… then still valve cover on it and everything installed and started briefly. ur the question has now settled with the control chain or do you have to worry about it? Greetings