Surface Grinder question..B&S 618

On the back of the table ways is a group of roller bearings running in a double V.. V on the bottom and a matchin V on the to of the base
casting.
Are they supposed to be laid in the same direction..or alternating directions?
[\\ //] Seen from the end ----> Front of machine
or[\\ ] -----> Front of machine
Or [ //]-----> Front of machine
This is a 618 Ramco..but its alleged to be a clone of the B&S 618
Ive had this in my shop for a number of years, use it regularly..but it started getting gummy so am going to take it apart for cleaning etc.
Just was never sure if the rollers were in correctly
Gunner
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