Kubota B6000 Loader Problem

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I have either a 506 or a 515 loader on my kubota b6000. The bucket is croaked on it. it seems like the left hand side lift cylinder sits down lower than the right. so I took a tape measure to it and the left side is an inch lower than the right. I rebuilt both the rams not even 4 hours ago. It is still the same. the loader is full of hydraulic fluid. I can get pics tomarrow if needed. But I would really like to fix this so I can sell it. If someone knows something please let me know. any help would be great.