Following on from this thread http://lawnsite.com/showthread.php?t=128800 In my situation, what would you do? my Rear discharge deck mower over heats very easily, but has a great engine and exceptable deck, but has a growly vibration somewhere in tranny or engine. mechanics can't diagonose it, have to wait until it breaks down. or.... the Side Discharge demo machine, 9.5 hours it has developed a nasty vibration, and engine seems to not be transferring max power to deck. mechanics don't understand how or what is causing this in 2 machines, 997's. 05 models. What machine would you choose, I have to choose 1 of these, no options, no more demoes, what would you do in this situation? The dealer has offered the SD machine as a replacement due to the troubles I've had with the RD machine, very generous, but when the replacement shows issues, lack of power and vibration, I'm a bit concerned! yes, when the vibration causes a breakdown it is under warrantee, but downtime in our peak season can be a killer. dealer does not stock spare machines. Interesting decision.....what would you do?