2016 Tiger 800 - Aftermarket Cam Sprockets, Timing Questions

Hi All,

I just got to removing the valve cam cover to check valve clearances. I suspect the cam sprockets are aftermarket, could someone confirm? I purchased this bike with 11,500 miles.

Also when positioned in TDC, my lower output shaft sprocket does not line with the manufacturer timing marks, this seems to me a bigger issue. Why would the crack sprocket not line per original manufacturers markings. If you ask me all the blue markings are from another mechanic, and to me they are all over the place.

Any suggestions appreciated.