I have tried to research weather or not I can rebuild the Vacuum pods on my 1987 300. At this point I am even more confused. One of the suppliers states his should work, some posts say you can others say you can't. Does anyone have first hand knowledge of this job, can they be rebuilt? I don't mind trying but I don't want to wast my time if they can't. Thanks

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1987 300D
1997 Jetta diesel
1998 Ram Quad cab