Jedijody, Nice pics. I can see where some fuel might pool up there.I would guess if you guy's are having the tip&quit problem this is you're solution.
I have followed this thread from the beginning It seem like the DLE30 is a pretty good engine for the price. Good power to weight ratio, easy to start and run, easy to mount, comes with good rc linkage for the throttle and choke,and hey even a muffler, all in all I would say a nice package at a good price.
I am an ex mechanic I worked as a service tech for a couple different John Deere dealers for about 25 years.
I have seen posts refering to pop off valves and pressures. I would guess we are talking about the inlet needle and seat under the metering diaphragm. I haven't read about anything yet, that would indicate problems in this area. If anyone has changed or adjusted the fulcrum arm that operates that needle under the diaphragm, you should set it back to factory specs. you will create more problems for yourself if you tamper with it. I have a fancy Walbro guage LOL to set the fulcrum arm but you don't need one to get it right. I am guessing this engine has a model wa or wt carb on it if so there are two raised bosses either side of the tip of the arm on the carb body where the diaphragm contacts the arm. Use a small straight edge to set the arm even with the top of the two raised bosses on the carb body. this is the proper setting for fuel metering. It ensures you get the proper amount of fuel into the metering chamber. A Carb. is not a complicated or magical device it is merely a controlled leak. I will stop rambling now. If any one is interested i will outline tuning in another post, just ask.
I hope this helps. It sounds to me like jedijody has solved the tip&quit problem some have had. I believe is caused by fuel pooling good luck to all, I think you all have made a good choice buying this engine especially those who buy from jedijody. It always pay to buy from a servicing dealer. Regards Andy