I'm ordering my groover tonight. I've been following this since last year, and I'm finally sold. Rears are a no brainer. I'd really like to hear from you guys who did the fronts, though. Really not sure what pattern to use. I have a steep hill, so traction is a concern, but side slip is too. I would like to compare the parallel groove vs multiple perpendicular grooves on the fronts with regards to side slip. I'm kind of thinking I'll do 2 perpendicular grooves on each side of the centerline, and either leave the center smooth as is, or possibly run a real short parallel groove right at the center. Thoughts?