Today I put my new wheel on, it had a 40 tooth sproket insted of the 45 that was on the other. So I was like cool a little more speed. But the chain was a little too long so even with the adjusters all the way in there was a ton of slack. I found the master link where the chain is joined together. But I was wondering how you take it off and remove a couple of links so I could put the 40t on.