topend help

[250rsforlife]

im re building the top end on my 87 250x and and noticed on the cam to letters one is a Y and the other is a K does it matter which letter faces up when i put it back together

[sm00th026]

All I do to put one in time. make sure your piston is up even with the top of the jug. and with the timing mark on the crank. and then set the cam in turn the cam lobe's down. put the cam chain on finish putting it together. and get ready to fire it up..