how often does this happen?
this is a common problem combilift machines have after changing steering modes repeatedly. Over a period of time the wheels tend to get out of sync and they get misaligned.
There is a trick to getting them back in alignment by putting it in sideways mode, steering the wheels full left, full right, then full left and then back to center. After completing this you can change mode back to forward drive and then back to side drive and the wheels should turn and align correctly then.

if this problem is happening frequently as in like everyday then yes, there may be a cylinder leaking internally. There are tests you can do to check the cylinders but for now i would identify what the problem actually is before ordering cylinders.