any suggestions for cleaning v wheels and rails
I use an inexpensive toothbrush.
I use a cotton swab to clean the V wheels, and wipe the rails off with a soft cloth.
Video on maintenance at:
and further notes at: https://wiki.shapeoko.com/index.php/Operating_Checklist
I use a cheap chip brush.
to clean the rails I use a plastic dish scrubby.
For the wheels, a plastic brush from harbor freight.