Size of cubes when cube-cutting flake? Pics?

Hello everyone!
I have had a few experiences with flakes and most if not all of them were rather miserable. the one that was the least miserable out of all of those involed cube-cutting prep, but it wasn't satisfactory either, proving really difficult to keep lit without burning a hole in my tongue. The flake was Capstan Blue, and the cubes were small.
Now, my doubt comes from the following: All the cube-cutting tutorials seem to suggest cutting squares approximately 3/16th of an inch in side, which seems quite a bit bigger that the blends that already come cube-cut such as stokkebye's.
How big do you cut your cubes? Any pictures to illustrate the point? I assume that the bigger the cubes the slower the tobacco will burn and the harder to keep it lit, but the cooler the smoke. Is this so? Any other insight on how the size of the cubes affect the combustion?
Help a newb! Karma will send you all several pounds of 1940's Balkan Sobranie, 1960's Nightcap and a couple of Ardor pipes...

thanks for the answers!
The Capstan had quite a lot of time to dry out (several days in fact, but living close to the sea means that even after that long a drying time they are significantly dryer than the come out of the tin, but not quite crunchy) and i have tried fold'n'stuff in the past, without success...
Also, i forgot to mention in the original post, once its cubed i gravity feed it into the bowl and give it the SLIGHTEST tamp. This is correct, right?
I'll try the micro-nuke technique, and i'll give folding-stuffing another shot too... Thank God youtube's free, or I would have gone broke months ago from watching tutorial after tutorial!