KX500 VF2 Reed boot modifications. What works?

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Ok, almost got it done...

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Whoops... Not so fast...
Starting over...

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Take two...
That's what happens when you don't want to ruin good parts so you use some junk you have lying around
This burring tool works great for cutting rubber away.

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A little sanding after the rough cutting..

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Done!

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Here is a comparison between stock (But made to fit the VF2) and modded...

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As you can see there is not a huge difference but it doesn't take much to make a difference...
Next, time to hit the dyno...