putting the glass on is a must. I wish I'd done it the day I started grinding. It's so easy to do. I know people say to put a ledge on the platen for the glass to rest on, but I didn't. I coated my platen with JB Weld like I was frosting a cake and laid it on top the glass. In the morning it was good to go. If that much JB Weld lets go, well I guess I'll just spend fifteen more bucks on a piece of glass from Boss. (that's where I got it)
Note: don't be a dumbbell like me. put a piece of tape over the platen mounting holes before you lay on the JB Weld!