I've done basically the same thing except I use Elmer's spray glue to attach the VB's. It peels off easily if you need to remove it then just spray it again to reattach.

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82 300SD 202K
82 300SD 233K
83 300TD 340K
82 300TD 98k euro (parts on the hoof)
85 300TD 282K
83 300TD 197K