Howdy Back All:
I have to give my opinion about the scat libiled lowly 1100. First it was designed to be cheaply made[FoMoCo problem], second it has a relatively weak accelerator pump. Other than that it is very similar to other one barrels in durability and reliability, but cheaper and easier to rebuild, and somewhat more tuner friendly than Carter YF and RBS, Holley 1940 and #1946 and Weber one barrel carbs.
My experience is that many of the so-called carb problems are more than likely ignition problems. The connection between the 1100 carb and the Load-O-Matic distributor is a source of many of the carb problems- from sticking or broken advance springs springs, a leaking or ruptured diaphragm and vacuum leaks, to bad OEM plug wires, to spark plugs. So, any time you might be assessing any carb start by making sure that the ignition system is in good shape and working as it should and that there are no vacuum leaks.
Back to the 1100 the most frequent problems are related to dirt and crud. A clean air and inline gas filters are a start to remedying those problems. But, in addition, remember that the choke is sucking unfiltered air through the exhaust manifold to the choke coil and into the carb. This happened with all one barrels until the advent of electric chokes. A regular and thorough cleaning, on the inside and outside of the carb goes a long ways to keep the carb happy.
The accelerator pump is probably the weakest part of the 1100s. It is relatively easy to diagnose and a standard part of any rebuild.
Lastly, the 1100 is an easy carb to rebuild. Caution, Do not over tighten any of the screws going into the soft metal of the carb body. Stripped screw holes is not an uncommon problem. That goes for the fuel inlet as well. Given that I'd have to say that another problem with the 1100 is human caused. I apologize, in advance.
Adios, David