Have a 3 year old Lazer Z 60". Just today the drive suddenly got sluggish. Heard noises coming from around the right drive area. It stalled the engine out. Now it won't start - battery, gas, fluids are all fine. Sounds like there is something holding the engine back. The drive levers are hard to move forward/backward. Could one or more of the pumps be seized? BTW, unit has 3000 hours. Thanks in advance.