Does i need paint my plane white before i seal it with monokote? Paint are may needed because yellow is not good color to hide various darker spots on the wood, after covering they are visible trough on yellow. (I hope you understand what i meant because i don't have an idea to say it better words )

Does sealing iron require a cover sock or can use iron just without it?

How i can avoid bubbles what come when i add monokote on another monokote?

What i do with trim solvent?