What do you think Jack thought about spelling? He certainly invented words (like "respectaburban"), but he also took liberties with spelling. For example, in Dr. Sax he mentions "ragout d'boullette." A search for that phrase in Google reveals one hit: Dr. Sax. Now, if you would search for ragout d'boulette (one "l" in boulette), you would hit upon a number of recipes for this tasty French Canadian dish. Jack frequently misspelled the names of jazz greats (e.g., "Charley" for Charlie Parker). And so on....
Jack knew how to spell. Just look at his journals, in which there are very few misspellings. Did he misspell words in his novels by mistake or on purpose? He often fought with his editors over punctuation and the like. Maybe some of the misspellings in his books are mischievous. Or editing mistakes. Who knows?
Perhaps Mark Twain said it best:
"I don't give a damn for a man that can only spell a word one way."
Spell words however you want, as long as you get the meaning across.
Jack would approve.
P.S. Tomorrow = the last entry for Jack Kerouac month. After that, ...?