Cheers Paul,
i want to learn slap and my understanding is that lower action is better for slap bass.
I'm certainly not expecting the action of a Fender Strat but my lack of playing experience means I don’t have a good feel for what is the correct action.
when I measure the relief it seems ok (about 0.25mm) so I’m loathe to adjust the truss road - I guess some gradual adjustment of the saddle might help.