Door skin or just keep block sanding it

[justahoby]

Shot some paint on my truck, fenders and cab look great! Doors, mmmn quite wavey..... took it down to metal primed sanded... pretty much is free of rust, but after the paint looks as if I took a rusty door and threw bondo on it... I know better, but the doors are the only thing looking like hell I could pull the doors and throw more primer on, block sand , but question is??? how much work is door skins, like grind the sucker off and tack weld my new metal on there? Worth it, or PITA?