If you look at the shape in gp4builder, you will see that he hasn't created the inside tyrewall as other tyres in GP4. The only fix I can think of is to take the rim and put it into another tyre shape
gigis wheels arent really a 2010 shape, how many teams actually use that particular spoke configuration,1,2 ? why dont you just check enzojz out and make your own mind up, for me the shape changes are very minimal at best,its the textures that make it what it is