Hi Dave. A friend of mine who has no internet access at the moment asked me to throw you a couple of questions about the 140DZ pump. He opened it up to inspect the diaphram and found it had a couple of tears or cracks on it. The problem is now he cant put it back together because he forgot which plunger goes up and which goes down. also he is asking if the plunger spring goes inside the neck of the plunger like the other YS engines or is it on the opposite side? I told him that the spring goes inside the neck like on all other YS engines but I have no idea on the plungers as I have never taken apart a DZ before. Can you help? Thanks.