2006 YZ450f 9oz flywheel for supermoto?

I recently installed a 9oz heavier flywheel in my yz450f to smooth out the power when im MXing it, I also do supermoto at a local kart track and was wondering if it is hurting me on a sumo track with the heavier flywheel weight.

also i cant find the link to the Excel spreadsheet for gearing for the 2006 yz450f. does anyone have a link to it?

thanks gray!

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