I have a Z335E Zero Turn riding mower. I hope I am posting this to the right place. My question is: my right motion control lever seems to be much stiffer than the left. There seems to be stiff when pushing forward or reverse, also on going in to the neutral position . Is this normal or is there a way to adjust the control lever. Like I said I am new this is my first riding mower. Thank you for your time and any advise or hints.