Thanks for the help, but I had already ammended the config.tcl file to include ns_param maxinput 41943040 which had an effect on the File Storage portelet of the ACS site but not on the communities, classes, clubs, etc., of .LRN
Instead, I searched through all the files and found that file-add-2.tcl contained a line:
if { $n_bytes > $max_bytes }
That variable, max_bytes, referred to the MaximumFileSize parameter noted in file-storage.info and although I changed the number of that parameter, it, too, had no effect.
So, I commented out the lines in file-add-2.tcl and that means that there is no top limit to the file size. It "works" in that I can now upload larger files, but it isn't a proper fix.
Thanks for the help! If anyone has a better solution, I am all ears.
-wp