404's are good machines we have one, and it def helps in the dry time on 1st cut. ours has a manual height adjustment, which can be a pain because you have to drive around the stones in some fields, a hydraulic height adjustment would be great like our old ih crimper had. ours has a steel and rubber roller. i believe you can still get parts through new holland, if not there are many equipment junkyards that may have parts. one of these days i'll get a moco and not worry so much about the crimper and the extra gas for running 2 tractors.