This might be sound obvious but have you checked your fuel flow where it enters the carb and ensured you do not have a partially clogged fuel filter - or a second one someplace you did not know about?
Won’t crank after driving…..
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sleepycruiser
I will get by….I will survive
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Two fuel filters….one of the old style glass housing that is new as of 1 year or less…and another one I put closer to the carb to see if fuel was making it up to the carb. I wonder if that could be the issue?? Neither is clogged though…and cold starts start up with no issue.
A partially clogged filter can slow fuel flow and then as the vehicle sits, enough fuel can get through to then allow a start again. Then higher rpms pushing (or pulling) fuel through a filter allows a vehicle to run with little to no issue.
Having had issues similar to yours I would do the following as they are easy:
Check my fuel flow after the regulator but before the carb - This will tell you if you have a filter or regulator issue
When running, spray some carb cleaner all around the base of the carb and see if your RPMs increase - This will tell you if you have a vacuum leak
With the thought all the work you did before was G2G and these checks did not turn up with anything I would be looking a the carb more closely.
And then I would probably fail at any carb work miserably. Carbs are my nemesis.
Paper filter elements when saturated with water will not pass fuel easily. Warm days with cool nights will condense water right out of the air into your gas tank and the station as well. I swap filters out often, let them dry in the sun for a few days and they are good as new. A bottle of yellow fuel fuel dryer every few tankful help prevent build up