As I have commented...the order of the rocker shafts was lost...I have looked at them and they are fine...I think there is no wear...I did not intend to touch the camshaft but with the book in hand it says clearly that if you plan to reuse the rocker shafts or buy new ones... You must maintain order or in the event that the rockers were new, the camshaft would have to be polished, otherwise it would cause greater wear on the shaft. Being at this point, where I have no order in the rockers. I find myself obliged to polish the camshafts, correct? Even if they are in good condition... Having lost their order... is correct polishing ?