Which type of porting did you ask for? Better low, mid, or "Mo Better"? I have a KX65 and want to have it ported as well. Already had Eric do my RM250 and was also very pleased with the finished product.
We went for the More Low to Mid and it is fantastic!
Comes out of corners like a gun. My son was already getting great starts so we will see if he earns the name "Holeshot" this season....I love this sport.