"Gunsmith"

I had a M1917 that was a total problem child money pit, new barrel installed but it had to have the front sight drifted all the way to left.  A fellow CMP shooter who knew its issue offered to buy it and I was free of it.  He and another shooter found that the "Gunsmith" who put the new barrel on didn't fully clock it, it was about a millimeter off.  He  may have damaged the front sight spline when he removed it because the front sight protector was a tad loose.

The problem is, as these rifles get older finding a gunsmith familiar with them is getting more difficult.

while i agree with the responses above in general , if you are fortunate enough to have a very close friendship with the right gunsmith it can be a joint adventure - mine had not dealt with a commonwealth martini action till i took my Martini/Enfield 1888 that had been converted by bonehill to miniature rifle [a 22cal] then converted again by some gunsmith to a 12ga trap shotgun ........till my fireing pin broke , took a week but it was replaced and functioning perfectly , my tean won our league that year