Hey guys,I'm at a loss to come up with answers.My 1650 has front ports.They appear to be normal small hyd fittings but a Meyer and a Jd 318 fitting mic. at 661 at the shoulder.The 1650 mics at 650 at the opening.Is this a propriatary part or has someone switched them??.I can't seem to locate the correct part measurements online.Has someone got a 1650 they can mic to prove my point??