It does sound like he doesn't have good support. With that said the idle issue should not be unsolvable. It sounds like you have a typical vacuum leak. I am assuming that the carb has the ability to mechanically close the throttle plate all the way. Regardless of the engine. Regardless of the carb/s. If the throttle plate closes and there are no vacuum leaks you should be able to get the motor to idle. Spray a little carb spray around the area and see if it picks up even more RPM. if so that's where the vacuum leak is. Also be sure the throttle plate is being pulled closed all the way. If everything else is good it should idle.
Edit:I saw his video on eBay and noticed the carb is not centered on the manifold. If it was flip flopped left to right might that be the cross member issue? Did it come with his carb? Does it use a Solex carb? If so might this help?
http://www.vw-resource.com/34pict3.html
Edit:I saw his video on eBay and noticed the carb is not centered on the manifold. If it was flip flopped left to right might that be the cross member issue? Did it come with his carb? Does it use a Solex carb? If so might this help?
http://www.vw-resource.com/34pict3.html