I think ive boaught a bit of a pig in a poke :(

[Peter Laidler]

We used to have a specially calibrated 'BOLT, gauge, Inspectors' that was the final arbiter. You have to slightly oil this bolt and press down on the body of it as the lower/left lug passes over the sear nose. If it touches or binds in any way then that's it.

You could try another sear and sear axis pin if you want.......

Remove the bolt and look at the sear stop part of the body. This is the inner ledge that stops the sear rotating upwards. If it has already been doctored due to the body being worn, you'll see a chisel like stake mark across the ledge that will form a slight distortion to the ledge and therefore slightly lower the ledge and therefore the sear nose. But, as I said, this can only be undertaken once.

Why only once.....? Simple. It's told the examiner that the body has already been deemed worn once and this is the second time so it's the chop!

On a DP rifle you'd ignore this and just keep doing it as it is of no real consequence. Same as a worn magazine stop face. Just another of the many things that condemn a No4 that noone takes into account when they linish out the old DP markings