Thanks for the answers. I feared the answers I got, especially the last one. I've just finished a nut and bolt restoration of my car, and are not really keen on disassembling the engine again. And yes, I've been working with classic mercedes for 6-7 years, but never tried to switch between different transmission types. Well, not with the old models. I've done it with the w123, and have never experienced problems like the ones I'm facing now. But I think I got a little more clever. Thanks for the help, and I'm sorry if my english is not perfect, but it's not my primary language.

Kind regards

Christian