Roo +1: in amongst the impressively-worded “do not touch the brakes without a formula main dealer holding your hand or YOU WILL DIE and it certainly won’t be our fault” disclaimers every other page, this tip is in the Oro manual too.
Are you saying that there is too much stroke on the levers before they go firm? Or that they are not firm enough and too squeezy (and so go all the way back to the bar if you squeeze hard enough?) If its the latter and you have bled them properly you might want to look at the seals: iirc the reservoir seal (just behind the bar clamp) can suck air in if it fails. It can also be unseated by overzealous ‘sucking’ on the top syringe when you bleed the lever/reservoir at the end.
Also, mine (2 pairs from new) have always had a tiny little bit of ‘slack’ in the actual pivots of the lever rather than the hydraulic bits too. -maybe 5mm at the end of the lever before it actually starts to move the piston in the lever, but that has never bothered me, plenty of other brakes do this a tiny bit too.