Toy Helicopter spare parts

I've got broken-blades helicopter and tried to recover it. It is not a real copy of original parts, just looking as like as original, but it does not really close to original. Moreover, front rotor big enought to touch tail rotor. Exhaust pipe also broken and lost, I draw it here. If you wish, you can modify source files, I am attaching them.
Wish you have luck to repair your old beloved toy heli. I tried to upload the video, but looks like cannot upload big files. https://www.youtube.com/watc