Strictly speaking, If your tractor is covered under warranty, and you have a complaint about the PowerShuttle clutch engagement, recalibration will be covered under the machine warranty. It it as simple as that. Now, your dealer may charge you for travel time if they do it on site, or if they pick up and deliver your tractor you may be liable for that charge. These tractors are calibrated at the factory so doing it again at predelivery would be a waste of time. It is impossible to assemble a new TN and have it function properly without a clutch calibration. As Andy says, some will need it again at relatively low hours; some don't. Also remember clutch engagement characteristics are a subjective evaluation done by the operator and what is OK to Andy might be unacceptible to either you or me. FYI 2120's, TC55's and TC55a's have a completely different control system.