How is the track?
technical or more jumps?... how many long straights ?
But why don't u do a trial test for yourself as u know the jp1 is good for short tracks and the jp2 is for long tracks.
What about your diffs?. have u set it up for the track?
Buggy: Lighter front oil (3,000wt) and rear (1,000wt)
More steering exiting
Buggy: Thicker front oil -5,000 and rear 10,000wt
More acceleration out of a turn:
Buggy: Thicker center oil - 7,000 and rear 10,000
Better through a rough section:
Buggy: Use thinner oil for the center (3,000 and rear 4000wt) and thinner oil for the front as well (3,000wt).
if it pulls around too much through ruts.