Late clearcoating after painting

[GTS61]

I painted my cab but got called to work so I didn't get time to clearcoat it. It's been 72 hours since I painted it. This particular paint doesn't use hardener so I was wondering. Do I need to scuff the paint before spraying clear or is it ok to spray now? I've never sprayed paint without hardener before. I'm still trying to get a hold of manufacturer but I wanted to get your guys opinion. Thanks for any advice!!

[bobdylan]

I would scuff or wet sand .

[GTS61]

Thanks Bobdylan!! That's exactly what the manufacture said. Thanks for replying.