What Spelling Mistakes?

Spelling air oars....hoo, us?

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EYE HALVE A SPELLING CHEQUER
IT CAME WITH MY PEA SEA
IT PLAINLY MARQUES FOUR MY REVUE
MISS STEAKS EYE KIN KNOT SEA.
EYE STRIKE A KEY AND TYPE A WORD
AND WEIGHT FOUR IT TWO SAY
WEATHER EYE AM WRONG OAR WRITE
IT SHOWS ME STRAIT A WEIGH.
AS SOON AS A MIST ACHE IS MAID
IT NOSE BEE FORE TWO LONG
AND EYE CAN PUT THE ERROR RITE
ITS RARE LEA EVER WRONG.
EYE HAVE RUN THIS POEM THREW IT
I AM SHORE YOUR PLEASED TWO NO
ITS LETTER PERFECT AWL THE WEIGH
MY CHEQUER TOLLED ME SEW.