Even if that was true, they are backed by a 12 month replacement warranty - pretty good insurance I reckon.
I have heard of a number of people using them who have only great things to say about them, and its based on this and the fact that I can buy them with any spring rates that I want, and know that if they screw up Just Jap will replace them , that im planning on installing a set in my GTS-T.
Here is some feedback straight from the business trader section: