It would certainly be easy for me to say that the negatives don't matter. They would certainly irk me too.
However in the overall picture they probably don't mean much since the overwhelming majority of your feedback is positive. Starting over accomplishes nothing as at some point you may very well get a negative again.

I would much rather deal with someone who has a multitude of feedback with a negative or 2 rather than a ebay newbie with no track record.

I presently have a 100% positive feedback record approaching 600 transactions [ All Buys ]. Sometimes I wish someone would just neg me and get it over with. The suspense as to who will do it is killing me