Mechanic Monday, warped speed Scotty

Mechanic Monday,,, Tip of the week.
This week is about warpage. There are a few items on your bike such as the cylinder head, case halves, clutch plates and rear brake disc that needs to be checked for warpage when you work on them. My shop has an expensive machinist flatness plate but you can get excellent results at home. Window glass is very flat if you do not see any distortion when you look through a window you can count on that piece of glass being flat enough to check your bike parts. Might want to do this when the wife is not home as she might not understand why you are holding a engine case up against the window with one hand and a feeler gauge in the other. A straight edge can also be used but if the item being measured can be laid fully flat I prefer to use a flatness plate.