I got a set of DHLA 40 H's with other parts when I bought my 74 GTV and I decided to clean them up while cleaning up a set of Weber DCOEs. I stripped them, cleaned them up and installed new gaskets and O rings. When it came to putting the Idle Mixture Screws back in the front carb, the Screw would not hold in the seat of the #1 throat. It seems someone along the way may have stripped out the threads in the seat. Actually, it seems as if the threads may have just worn away to the point that the Idle Mixture screw threads will not engage enough to hold with the pressure of the spring and new O ring pushing the screw back out of the seat. I should have figured that something was wrong when I took the carb apart as that Mixture screw was really just sitting in the seat and not screwed in much if at all.
Now to my question. Is the carb body now a throwaway or is there some fix that could be done like a threaded sleeve (i.e. like a helicoil deal) or maybe welding/soldering new metal in the hole and rethreading? The thread is very fine so finding a tap might be problematic. Could a Carb shop help me with something like this? I'm new to working with carbs so any help would be appreciated.
Also I posted a thread on the Parts For Sale/Wanted for a DHLA body if someone has one that is sitting on a shelf somewhere Link to Thread