Hello Sam (Boilingwater),
Your comments on the video of WuHu A4 being a "crapshoot" surprises and mystifies me as you were there when you asked Rod Blakeman for help on getting it to run. He spent literally the entire day, tearing up his hands trying to get the body off and clean up the mortal wounds the A4 received from all that JB Weld and silicone like gook that was put into the smokebox along with those home made blast pipe extensions that kept the body from coming off.
There are two WuHu A4's here in the Seattle area. One of which is mine and I assure you Sam; that neither of our WuHu A4's came like that from the factory. Your first two pictures of the WuHu-less A4 give testimony oh how nice Rod's efforts benefited the poor A4 after a full day's work at Diamondhead. Hopefully, it can run someday again.
All the Best, Eric