So I just bought 100 weapon repair kits from the bunker and applied most of them to my brush gun and its still below CND - Is this another lesson in greed? :unsure2:

Did you equip the rifle before you started applying Weapon Repair Kits to it? I've wasted them by forgetting that before.....unless you've got a repair of 10 or something you should only need 4-5 to fully repair it assuming it's near broken to begin with.

The http://fallout.wikia.com/wiki/Brush_gun has a glitch if you mod it. Perhaps this is what the problem is?

Oh the irony of a forged reciever. I still blame the DLC though for impractical reasons.