Curing and burnout are both very important. I have been casting prints for over 1.5 years with just satin cast (bought Plasticast in the beginning and found I didn't need it) I really couldn't tell a dif in casting between the two. You do have to make sure there is adequate ventilation during burnout. Oven must be calibrated to make sure u are reaching 1350 F.
Resin is not forgiving like wax. If u can't cast wax u need to get out of the casting business. If u can't cast resin it is always curing or technique in some way. When it comes to resin everything matters. Bad castings are usually about "ash residue". Three things are key to good castings: Complete curing of the print, Reaching 1350 to 1400 at high end (calibrate oven and controller, some type K thermocoulpes can be off 50 degrees or more), and enough oxygen flow in the oven to facillitate total elimination of the resin. There is also spruing, overheating the metal (swelling), cleaning the metal (flux), etc., but the first three are key.
I have talked to experienced casters who say "Don't worry I can cast anything" then all of a sudden it's the resins fault. I for one know well that after over 30 years of casting in the retail and factory setting, that you cannot be set in your ways. There is change continuously in all industries now, including jewelry. Keep up or get left behind. I choose to try and keep up.
I still learn new things every week, I have never been one not to listen to suggestions. Sharing info and helping others is part of a craftsmans legacy. I for one would like to be remembered as something other than my landlords tennant.
Dance like nobody's watching!