New to the thread. This is my first post. If this has already been discussed I can't seem to find it. So, here goes: I have 1,500 miles on my 2015 and decided I needed to check the chain slack. Haven't had a motorcycle with a chain since 1976. Anyway, I bought one of those chain slack measuring tools. I have the bike on the center stand. I can measure 45mm, spin the wheel 180 degrees and measure 25mm, spin the wheel another 180 degrees and measure 45 mm, etc. Need I go on? Just wondering if this is normal.