Fixed workshop

Hi everyone

I'm having some problems trying to find a workshop that would do the job...
I'm changing the crank set on my peugeot fixed conversion
I recently got a track SR Royale crank that fits my actual bb, but it obviously affects the chainline as well

now here's the tricky part:
I have a SWISS BB, which means that the only possible way to affect the chainline is to substitute the BB AXLE with a shorter, compatible one.
I need a workshop that could do the job: everywhere I've been, I've been told that it was too complicated or stuff like that. Where can I look?

Besides, as I don't have the tools to take off-mount the new crank myself, I'd need to:

• take it to the workshop, have the crank mounted, measure the difference in the BB Axle lenght (to go after the new one)
  
• remount the old crank
  
• re-do the operation once I've got the new BB Axle
  resulting in paying twice for something that could be done in one "sit". Is there any way to avoid that?
  
  

thanks everyone for your time, it's really appreciated