This article/pic would seem to suggest they are rollers both sides
(I would not swear this applies to every model for every year though ?)
(Certainly some/most/all years of singles were ball bearings.?)
What do the suppliers offer ?
Their price on bearings is often considerably better than a mere mortal can do (You'd hope !).
What is in it at present ?
![[Linked Image from i.postimg.cc]](https://i.postimg.cc/mDYN0CVS/AMC.jpg)