It's only on turns...right or left. The mower was purchased used a year ago. Its a XT3 GSX with a 48 inchfabricated deck. I have used it all season and only noticed it as of lately as the grass has really thick. Earlier i didn't notice it.
Thanks...looks like that is my next option...talk to a local dealer or customer service. I have had the deck off and all LOOKED ok. Thanks fo the reply !