Hey! I went through FAQ and used the search button and didnt come up with an answer so... I took the HJ47 to a Fathers Day car show yesterday. Ran great there then I couldn't start it (in front of 300 people.) It stalls when I push the clutch in. Starting either fires right up or the starter has to whirl for a while before the engine idles. Its sluggish now and fights to get up to speed. Feels like fuel isn't getting there. I replaced the fuel filters and the air filter over the winter. I can't get the sedimenter open to drain it as the bolt is stripped. Wondering if thats clogged and is creating some sort of vacuum issue? There is no smoke at all but maybe the diaphragm needs replacing? I replaced the head and most everything under the hood this winter. It ran great until yesterday. Any ideas? No leaks on the injector pump or primer plus fuel lines are clean.