The very early triples did not have the oil bleed hole in the cam bearings,it was recomeded (at the time) that you drilled a 1.5mm hole yourself.These bearings (without holes) must have been very early old stock, As Piet says there are very good reasons not to use them due to the crumbling/crushing that takes place,Tyhe top face where the nut and washer go usually show signs of getting "out of square" with the stud accis and also of the washer sinking into its own recess from normal torque, which should not happen.I suppose you could drill the holes yourself and see how far you get before they start to deteriorate.
I have had a set of machined from solid bearings in the past, but I could not bring myself to use them, since the "C" rings (which control end float on 180's) were not sticking proud from the bearings, and the cams would have surely finished off uncontrolled, they were allso very sharp and nasty in my hands and the halves of the centre pair did not match each other, they went back and I was critsiced for being fussy, "there all like that mate and they are OK" It was a few years ago, and they may be getting made differently or by someone else now, do you make them yourself Red? or are they outsourced (not wanting to ask you to eveal the source) but is the same thing available from other dealers?
CLEM
