There is a chap about 10 minutes from here that does re-sleeving, I might give him a call and see what he reckons, I know he does concentrics but not sure on the Monoblocs.
I put Premier Concentrics on the Commando and they are excellent, there is no sign of wear yet after 2,500 odd miles.
Similar metals quite often gall that is why they wear.
"Galling is a form of wear caused by adhesion between sliding surfaces. When a material galls, some of it is pulled with the contacting surface, especially if there is a large amount of force compressing the surfaces together. Galling is caused by a combination of friction and adhesion between the surfaces, followed by slipping and tearing of crystal structure beneath the surface. This will generally leave some material stuck or even friction welded to the adjacent surface, whereas the galled material may appear gouged with balled-up or torn lumps of material stuck to its surface"