It took a couple of goes to attach the nose to the body. Milliput was a disaster. I thought I had some Green Stuff, but can't find it. In the end, I put an old tip on the soldering iron, and used sprue as "hot glue". It has had a layer of Tamiya putty since then.
The engine has taken quite a few sittings. Glue a piece on. Wait for it to set. Repeat. It is made of old rims and assorted junkbox parts.