update from second test today.
truck sat for three days without being started (instead of 2 days like the last test)
i pulled the choke knob all the way out.
i pulled the air cleaner off and verified that the choke was engaged and plate closed.
i put the air cleaner back on this time (it is the oil bath type), instead of leaving it off like last time.
i checked to see if there was any interference with any linkage or cables to/from the carb, but there was plenty of room; nothing was touching anything it shouldn't..
i turned the key to on and pressed the start pedal.
truck started within 2 seconds. hmmmm....

as stated previously, this truck, for the last 4 years or so since i had it, never starts up in 2 seconds after sitting for a day or two or more.
well, if "it ain't broke" we can't fix it

and for now "it ain't broke" so nothing to be done

.
thanks again for all of the replies and good advice and support with the issue.
i will report back if the problem comes back OR if i find something out.