Big 10-4 on the dish soap soaking/cleaning all the plated parts. What I discovered is the Ajax brand dish soap seems to to do a more effective job disolving the rust.
For your delamiation issue, you can inject some wood glue under the separated plys and clamp it with some wood clamps and some 1x1 square dowels like I did on this one. I covered the dowels with foil so that they would not glue themselves to the shell. Afterwards I sanded the inside of the shell & the excess glue that I was not able to wipe-off before it dried, then sprayed a few of coats of clear shellack.