I agree, there is a blockage somewhere. I have a new DLE20 carb on hand. I took off both sides to check for the proper gasket/diaphram order when I re-assembled the carb. Speaking of which, assuming this engine is 20 to 26 cc, is there any reason why a DLE20 or 30 carb wouldn't work. I guessing a 26cc engine as I recall the former owner said that was the size of the engine he had put in the model. I don't ever recall him bringing this model out to our field to fly. I have the DLE20 carb now but could order the 30 carb from Tower if that would be the better choice.
I also could just remove the engine entirely and put a DLE 20 in it if need be, although the cowl has already been cut for the former engine. I would like to get this engine running if possible.
Mike