Minolta MC ROKKOR PF 58/1,4

I have determined to modify Minolta MC ROKKOR-PF 58/1,4 standard lens adopting onto Canon EOS Digital mount with the condition of perfect infinity focusing compensating 0,5 mm flange-back discrepancy between Minolta SLR and Canon EOS. The flange part of this lens is grooved outside 0,20mm on the surface to be attached on EOS flange already, so compensation value would be residual 0,3mm on helicoid adjusting.
I came across with some very interesting description about ROKKOR-PF 58/1,4, though I didn't pay attention to such a old design optic at all, my concentration was drawn into his writing about the performances of this lens.
"Though the picture quality is not enough in the condition of iris fully opened, one or two step closing the performance would be available in this digital age. The expression is different from later MD models, so it is suitable for shooting still lives rather than powerful wild lives, the manner of this lens is delicate and smells something Orient." , so written in the article found in a Web site.
Now I'm on the way of this hobby work, unnecessary automatic iris open closure constructions are thoroughly removed this time, cam, spring, rotating part and ball bearing, etc.