Does anyone have experience removing the drive shaft between the rear wheel drive and front wheel drive of a L3400 HST? I suspect that it is a coupler in the driveshaft enclosure making all the noise and causing the front end to not engage but I don't want to disassembly more than is required to verify that is the problem. I have seen where this is a problem on other Kubota models but they come apart differently. Looking for someone who has been down this path before.