on the 950 I just redid, I used eccentric collars on the inner and outer. you can remove the bearing from the inner flange, use a punch and hammer to knock it sideways in the flange, then tap the bearing out with a hammer. motion quoted me $83 each for the outers (i think they make up their prices by the day as i got 5 different quotes on chain... just kept calling till i got a quote i liked) it is quite possible that your inners were just missing the lock collar. you should be able to look at the bearing and tell if they were set up for an eccentric collar. if the fafnir's are in the budget, that's what i would go with. i've had the lip that the eccentric collar locks down to break on the cheaper peer bearings that Buffalo Bearing sells. that being said, i have the cheaper ones in my hustler because $83 each was not in my budget! I always order one extra when buying bearings so that i have spares for each machine.
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