Wanted: Decent Cycle computer and Campag Band adaptor for Braze on derailleur

Didn't have the best of rides today. 2 miles in and my Cateye Mity 8 decided to jump off my handlebar mount and land in the path of the only car behind me.

Then something fucked up with my front derailleur. I don't know why but now, for some reason, I can't get enough thread of the bolt of the braze on mount into the derailleur. The band-on adapter came with the frame (Planet X), so I'm hoping a Campag one will be slightly thinner, and therefore compatible with my Campag derailleur, allowing my to get a good amount of thread in...

Anyway, so before I splash out online I'll see if anyone has any second hand::

• A good cycle computer - I'm thinking along the lines of a Cateye Strada
  
• Campagnolo (or any really) Band-on clamp (35mm) to accept a braze-on front derailleur
  
  

Much obliged.