What color do you see when you look at sight glass? Are you looking whilst the big girl is on her center stand or side stand? Maybe you are not seeing the level because the glass is full and the oil is clean.
On center stand should fill glass. On side stand should be about halfway up.
After your next ride put it on the center stand with the motor running. Look at the sight glass - it should be empty and you will see the silver backing. Then shut off the engine and watch the oil rise. Don't worry about the over fill as the normal sump level when running is below the sight glass.
On my 99 the book calls for 4 quarts of oil. If I put 4 in the window gets dark and I can't see the oil level because it is full. The next time I will put in a little less so I can see the level. When I took a little out I could see the level quite well.
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