Cinema 4D Object problem

[bignoob77]

The problem im having is the weight of the object i already understand this . What i dont understand is how to fix it. I even try to auto weight the object with the same problem as the end result. I will show screenshots

This is how it should look in game.

 

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This is how it looks after saving as bm

 

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This is with weight

 

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What am i doing wrong with weighting my object here is what the weight looks like in the bm file

 

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if anyone can help this would be great.