I'm not new to lawnsite but just recently made an account. I'm fairly new to the business with only about 3 years experience and working for a few local company's on the side the past few years. Last fall, I decided to buy a new ferris is3200 61'' with the 37hp efi vanguard for my business. I put about 20hrs a week on my mower. First off, around my area, there are a lot of Ferris's followed by a mixture of scag, grasshopper, and exmark. I've used all four of these brands now getting at least 50hrs of seat time on each so I'm pretty familiar with how they all cut. So far, I've put 150hrs on my ferris this season and I'm having a major problem with the cut. Its been to the dealer multiple times to check deck pitch, blades, rpms, etc... and no matter how its been setup, it leaves a streak of uncut grass exactly where the left side and center blades meet. I've tried stock blades, super high lifts, ferris non-icd blades, and g5 gator blades. I cut mainly limp blade grasses and most lawns I cant cut under 3 3/4'' but mainly I cut at 4'' on the nice lawns and 3 1/2'' on the weedy lawns. The deck will only cut cleanly at or below 3 1/4''. Its very aggravating knowing I dropped 15k for the mower and triple bagger and the cut is terrible. I don't bag grass, only leaves in the fall at the moment so 95% of the time I'm side discharging. Scag, grasshopper, and exmark all leave a very manicured cut on these same grasses. I'm at a loss as to what I should do at this point. Any advice would be appreciated.