RE: 130 Flaps
Retracts?? good question. Have not put too much thought into it lately. I may prefabricate something prior just to get an idea of how to work it. I am looking fwd to the arrival of my C130, hopefully soon. Keep us posted to your Nacelle mounting. I was wondering if anyone else has run into the same issue that you have. I would imagine the fibre filling should work well.
Craig.