Somebody/Anybody, I am trying to replace the worn out Bing on my 1973 DKW Hornet (don't hate me because its not a Penton!)with a 28mm Mikuni. The sticking point is the hole in the backbone that the air hose goes through.I've read about people doing this conversion on Pentons,but never DKW's. Somebody out there must have done this swap somewhere,sometime, how about it? What do I do? I need to know! [?]