if anyone has had the same prob i have the answer from matt @ tyga

i quote from an e-mail

"using the alloy spacer will give top end performance, but will incur a slight dip in lower midrange. good for racing. fitting the carbon reeds without the spacer will improve the midrange without the increase in ultimate peak. good for tracks or street"

information is power, at my command un-leash hell
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"cant you see the no smoking sign, this is a public space" rrrrrrriiiiinnnnngggggg ddddddiiiiinnnnnnggggggg 2 stroke till i die