as we used to say at the bike shop, hold it closer to the computer. LOL personally I despise cutting forks. unless there is over an inch of extra sterer I never cut them. you can't get is smooth with just just turning the uppercup? if you are in doubt about having enough threadfs for the locknut I would get a shorter headset and start over NO CUTTING.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk