Hello, im searching for some help regarding a starwood Lama. I searching for...

Hello, im searching for some help regarding a starwood Lama. I searching for some drawing how to find some article numbers for the tailrotor and mechanics. I need to replace some parts. Can anyone advice me? I have asked vario in Germany already on Tuesday but without success. The drawing on their website is not usefull and only a few parts are available on the website. Thanks for you help.