Braze on repair on frame - any advice please?

Ringpeace

Basically have a frame with braze on. This has got slightly damaged, not bent but the metal isn't smooth anymore and is a bit indented / pitted.

This keeps making the front mech move - as it isn't sitting correctly. Bar an expensive strip down, package, post to Argos cycles and get a new braze on fitted - does anyone have any ideas how to fix?

The frame won't accept a band on easily as it's a bit square. Was wondering if there were any kind of washers available to fit over the braze on so that the mech will clamp a smooth surface?

Apologies for reposting in here - need some expert advice!

Thanks in advance for any advice or suggestions,

Cheers

sungod

can you post a picture of the bit where the problem is