I bought a few rainshadow kits, they are rx7 9', 5wt, 3pc blanks . I spined them the same way and all components down the the thread are the same. I just had a short opportunity to cast them before sending them off. They both cast fine and true but one of the rods seemed faster and had a little more backbone? Anyone else experience something like this? Not sure if this would be common in less expensive blanks or something I did?