custom made T&T Horizon Series fly rod
If you go into a shop and take a couple of rods off the rack (Always ask first) and check the spine you will find that they are all over the place. Some high end rods are right on, some arenít. Its not that much trouble to remove and replace guides, you just have to be careful and take your time. On the other hand I guess it depends on what you want to do with your rod as to weather you want a super fine tuned rod or not. How does the rod cast. Does it do what you want it to do, if its OK donít try to fix it. If you want real accuracy or a distance casting tool I think having the guides in line with the spine makes a big difference.
Try test casting the rod and rotating the upper sections of the blank and see if it makes a difference.
I have also had blanks that have a natural curve to them that you can see as you roll the blank around. In that case I have settled for the natural curve of the blank. I donít think that hurts anything really.