Framebuilders - cable stop location

The cable stops on my Jamis touring bike are tacked on either side of the head tube. This might work fine with caliper or linear brakes but it's lousy with centerpull canti's, especially with loaded front panniers. The shift cable and housing kinks badly when the center brake cable presses against it when the fork cranks hard either way, causing problems with indexed shifting. What would be a reasonable price to have a local frame builder (Portland, OR) move these back onto the downtube? And is this right way to remedy this problem?

I'm a little confused about the problem. Is the cable getting damaged?

Yes, the housing kinks, the cable kinks, and ferrules bend and split. The result is poor indexed shifting.

Moving the cable stops is easy, a $50-$80 job....the repaint will cost more than that though. A v-brake would be much cheaper.
Have you tried crossing the shifter cables? Meaning the rear der cable will go to the left side stop and the front to the right. then the cables themselves can cross to their original position as they go down the down tube. This will put an arc in the housing that should let you turn further before the brake cable housing hits.
Clear as mud?

Clear as mud?

Roger that. It's worth a try.

I may be wrong, but it kinda looks like your cables and housing are too short. Your cables and housing should never be bent in the position they're in.