i have a surface grinder , and i'd be happy to grind them free of charge .
but i have not used the grinder enough to say i am by any means a proficient grinder operator , i'd feel fairly comfortable doing the smaller sets .
but the large b-s parallel is going to be out of my comfort zone .
and i lack a surface plate for accurate measuring so i would have to grind for matched pairs and not a specific size .
if no one with a bit more experience offers up i'd be happy to give it a shot