You don't have to flip it yet. Their is a insert, where you tighten the clamp. Look on the back of the clamp and you will see + 16 or - 8. If the +16 is not upside down, you can flip the insert and have the -8 on the left as you read it, right side up. That will lower the bars about an inch. You may want to go a little slower and just take out 1 spacer at a time. Then you just take the clamp off, take 1 spacer out and put the other on top.
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George