Autotech Valve Spring Set Heavy Duty 8v - All Questions

I have a set of these springs that bought off you guys some time ago. I went to fit them and found the inner spring totally different to the standard units. The Autotech inners spring version is bigger in diameter than stock, and it rubs on the inner diameter of the main spring. Where as the stock inner spring is smaller in diameter and so does not rub on the outer spring. The Autotech spring does not sit on the valve spring retainer ledge that locates it on position. I cannot image the having the twn springs rubbing on one another being correct as one spring or the other will fail very quickly. Can you help clarify if the two spring are meant to rub on each other. You can see what I mean in yourown images for this product. I can included images of the stock spring as comparison if required. Thx