Bill,
Best wishes to your mother. I am sure you are a great comfort to her.
The Turbine keeps looking better each time I look. It is a very cool project.
Today I reworked the form for the Firebird III bubbletops. They snap into the opening and stay in place without glue now. I was quite pleased with that. It will be fun to see the turbine cars together sometime.
Take care,
Andy