Did some cleaning, belt pulley had almost lost crown and had some wear. Quick mounting on lathe a bit spin restored it good enough, very little material was removed, more like smoothing than anything else.
Secon thing as to check all threads and clean them. All went well. i notices that fixed bearing end bearing outer ring retainer had some resin left in the thread, looks like it was glued with a thread locker, cleaned i up and planning to use weakest thread locker I have (blue in color).
Then I check the fit on shaft and shell. I used very little layer of micrometer blue to see if there are any problems, There were some little abrasion marks on the other end, i used plastic abrasive pad, just one quick round and they seem to disapear most of it. Shaft measured out 24,995 mm ant six places and on one 25,994 mm. Nominal is 25,000 mm and that size bearing should have inner ring about -10 µm tolerance. Looks fine to me.
Shell to bearin outer ring was firm sliding fit...did not quite drop of it's own, but when straightened with a press (by rotaing sheel/outer ring just when arbour kisses the outer ring seating bushing) it bottoms with "swoosh" with a slight manual effort.
Shaft to inner ring as an easy press fit, basically all has to be straight, can't push it manually, but press has no eferrot at all.
Both fits were that perfect that no dye was left on mating surfaces, pretty much all color was pushed ahead of the bearing.