I have removed the choke cone and stand pipe as they were both broken. The base of the stand pipe appears to be a 3/4" square with two 1/4 circular pieces standing where the pipe broke off. How hard are these to remove? I made a tool to fit in the slots, but it didn't budge with what I would consider a good bit of force. Does the jet nozzle that screws up in from below have to be removed? This also seemed pretty tight. I read through the archives and it seems the venturi has to be removed with a special tool/puller. Is this something that can be fabricated/machined? Is there a drawing or photo of these tools available? Does the wishbone shaped fork that raises the choke cone need to be removed? If I could remove the venturi and the base of the stand pipe, I think I could fix this carb using parts from the Filling Station. I have the repair manual and parts book etc., but they don't go into enough detail/step-by-step procedure for my level of confidence. I am not the sharpest tool in the shed, but I have rebuilt a few carbs over the years. Any advise, tips or counsel would be appreciated.