Don, after reviewing several of your threads concerning this bike and carbs, there could be a couple things that would cause your current issues.
When you reassembled the carbs, did you have the carbs on a flat surface plate as you finalized the joining of the four carbs? The alignment of the four individual carbs, especially regarding the linkage, is important when making up the rack.
Secondly, you have California carbs. On the California carbs, there is an additional port on the carb with an accompanying hose. This port is located on #2 (left front) carb body above the butterfly. It is similar to the 1983 carb in respects to that port. Whereas on the non California 1983, it is routed to the 'boost sensor' (vacuum advance), in the California version it is routed via hose to the charcoal canister. Perhaps that hose from #2 is disconnected at the other end? That would result in a huge vacuum leak.
Thirdly, since your bike had the YICS, perhaps one or more of those hoses and/or the YICS chamber is leaking?