Hobby 600 Model question/problem

Hi we have a hobby 600. Now the problem begins: the parts have been built since 1985 or so. Interior equipment is as good as identical. Outside I see no differences… According to statements so far, however, there should be. The biggest problem is the assignment. Built 1995. The hobbies I found all were however all model until 1994. So this model is somehow different. What I could imagine is that the 1-2 years stood on the yard. Well, further. The engine. I have a hobby 600. The Peugeot J5 is the same as the Fiat Ducato of the time. Defects: I wanted to buy a door at the auction house. However, the seller said that it would not fit with me because it was my 1995 and the door was from a 1992 or so. EXAKT looked like my door but it looked like that. Am I crazy now or the others? At the bottom of the door were several built with a Peugeot engine, but wrong thought. All the models I found were with the Fiat engine. ür is completely rust. I was already advised either to weld a piece or to change the complete door because the more is found with the welding. what do you say? second huge problem is the windshield where that is not even so rough. it has louder stone strokes, needs to be changed. the frame, however, is already rusty. can you also have something welded in there or does it have to be repaired in any other way? at the door to the “living room” there is water, no idea where that could come from. not litlichly, but at least bitsal what. Klo: Directly at the opening of the emptying tank the entire outside wall is arched to the outside as if such a tube were in there. is that normal or should you also look at it? The camper came last year, so 2007 by the tüv without having a single mistake (and of course without bribery… quite normal at tüv south). however, these mistakes were not so crass yet. what do you think the a Should I post pictures so you know faster what I mean? Thanks for the support…