All their (KTM's MotoGP team) riders came from Yamaha's - Bradley, Johann, Pol... and it's proven really hard to leave the easiest GP bike to ride and learn to go fast on possibly the hardest now that the Duc has improved their turning issues.
Olivera has no previous bias' or notions of how a GP bike should work so I'd guess that's why he's adapting quicker than Zarco.
I hope Zarco stays in GP but part of me wants to see him take Bautista's ride in WSBK next year and demolish the field too.
Pic = COTA Race in '16 - the year he was Moto2 Champ I believe.
My ambition outweighed my talent.