I bought a husky z4824, the controls move VERY easy almost by them selves when pushed ahead . They are also very jerky if you try to slow it down to turn . It’s so unpredictable that I almost can never make a turn with out tearing the grass . It also doesn’t automatically return to neutral like the other zero turns I’ve run . I’ve adjusted the linkage so it doesn’t drift anymore . Is there suppose to be a sping to hold tension back . Seems to be a little play in the control arms that I’m having trouble tracking down . Any one have some ideas ?