Either deck isn't level or you have a low tire.
Most decks run 1/8-1/4 inch low in the front. could possibly be that the spindle isn't sitting straight in the deck. Make sure the blade isn't lower on one side than the other, even though the deck is level, the blade under the deck may not be.
Thanks for the help.thanks for the information will readjust so front is a little higher and check out the spindle just heading out to mow. Will check everything in the garage where I know the floor is level.
Doug