Hi, Thomas!
I think the seals are the same as Kayaba from the years that the Kawasaki KX models used 46 mm conventional forks. I think there were some spare seals in the parts you got with the bike.
One thing you might want to try is cut a spear about 1" wide and 6" long from a plastic milk jug. Jam it down the fork leg underneath the seal, and move it all around the fork tube. If the leak is being caused by a peice of grit underneath the oil seal, you might knock it loose.
In any event, Factory Connection has worked on your forks before, and they should be able to service them again.