Elswhere in the post, I mentioned that I had a clock bushing kit and tools for opening up the bushings. I started with too large a main jet so I bushed it too small, then used a pivot hole broach to increase the size until I liked it. This is not something the average person has tools for, but if you start with a new, too small jet, you can incrementally increase the size with number drills. You would need something like a #60 - #80 set. Keep in mind that if you go too far, you have to throw away the jet and start over.
Having said that, I don't think you should do anything to your jetting until you get the ped running like it did before this problem.
I like the idea of removing the carb and disassembling and cleaning it. Examine the float bowl for any contamination since the last cleaning and I can not overemphasize the use of a bright light and a magnifier to examine everything.
When you install the carb, make sure it is all the way onto the manifold.
We can figure out what to do next after we see what this does.