Friend of mine had his car fail on a few items of welding last week. Got it all welded up and took it back for a re-test today. MOT tester picks up a tiny hole on the rear axle, around the size of a 5pence piece, and then doesn't put the car through, and tell's my mate he needs an axle. Apparently you aren't able to weld a rear axle, it needs to be replaced? Help please people!?