Hello I have a Dixon Speed ZTR 42" Model 966611201 and the right propulsion unit has basically stopped powering. I have checked and it appears that this unit is serviced at the factory and no further maintenance is required. I would at least like to check the oil level, but it looks as tho I will need to drop the transaxle down to access the fill plug. Is that true and how do I drop the transaxle? Could there be something else causing the problem. This problem has been slow coming on as it has been slowly getting worse over two years or so. Thanks for any input!