Not trying to be mean here but you don't know how to do any of the troubleshooting procedures and from the sounds of it your mechanical abilities are next to nothing. You are going to hurt yourself. Working with carburetors and fuel is very dangerous if you don't know what you are doing. Don't wait until you're standing next to a burned down garage with your mower in the middle of it and most of your hair gone to take it to a professional.
Not trying to be disrespectful here but you sure don't know whatever the hell you
think you're talking about. I've already done several of the "troubleshooting procedures", as well as replaced entire engines. So "from the sound of it"....your reading skills and assumption abilities are "next to nothing"!
I've also never hurt myself, whether working on tractors or trucks. While I've never claimed to be any kind of expert or pro with engine mechanical services or repairs, contrary to your asinine assumptions, my mechanical abilities are actually quite good, in fact, easily above average, thank you very much.
Nonetheless, I'm quite aware of all the dangers associated with working with fuel. I was simply inquiring about a test procedure that I haven't done and didn't know about; that doesn't mean I was definite going to try to do it; just meant I was curious about it, and trying to assertain if it was a test that I
may want to try, or not. As I don't take things to 'professionals' unless I absolutely have to; never have, never will.
Back in the 1980's, when I lived & worked on a 47,000+ acre cattle ranch, when we weren't pushing cattle, or building log bunkhouses & ranch houses, or hay barns, or mending miles & miles of fence lines, or working on tractors or combines or balers or haytools or spreaders or forage equipment &c, or shooting predator cougars or coyotes during calving seasons, or Grouse gunning over our Llewellin Setters, or deer or elk or bighorn sheep hunting, or building fly-rods & fly-fishing, we sometimes worked on our trucks. We had a 47' Ford pickup completely restored, except for replacing the Flat 8 with a Ford 283 out of a 65' Galaxy 500, and replacing the double-clutch tranny with a (T100?) from a 67' 1/2 ton Ford pickup. Also had a 48' Ford F-1, 51' Mercury M, and 52' Ford F-2; of which I rebuilt the carbs on each, the tranny on one, and replaced a lot of other parts on all of them, such as intake & exhaust manifolds & drivelines & suspension & steering parts &c. During the early to mid 80's, I think (13) or (14) of the 45'~47' Fords (no production during WWII) were offered to me for free, for parts, by several Ranchers & Farmers, if I wanted to haul them off, as the 1/2 ton pickup body was the same as the 2-1/2 ton bodies on the big farm & ranch trucks with 18~20 ft flatbeds. Btw, I bought all three (the 48', 51' & 52') from the original owners!....while upland gunning for Sharptail & Sage Grouse.
Moreover, if I didn't know what I was doing....I would've just started messing around with the carb a few weeks ago,
without knowing what I was doing, instead of taking the time to come to this great website —whilst patiently asking questions over several days— about our non-restarting issue when the engines' warm. Apparently you've forgotten that that's also one of the main reasons for the existence of this website.
So why don't you run along and try to find someone else to insult and get frosty with, Ol' Sport.
But I will, I guess, if you insist 
...as we did purchase one of those ultrasonic cleaners last week (haven't used it yet, so can return it - if recommended not to use), and picked-up some