we have a zk w/ 1500hrs and it's been a great machine. this week the engine threw a rod or something so it now has a hole in the engine. seems like a replacement engine will run 2k$ if we install it ourself. My question is would you? nothing else has ever been replaced except belts. How long do the drive motors/etc usually last and is it a waste of $$ to put a new engine on it? just looking for opinions. bought another stander today to replace it in the fleet so i'm not super rushed to get it back into operation.