Does anyone know where you grease the two bearings on the flywheel on this unit? It has two large pillow block style bearings on the shaft on either side of the flywheel. I don't see any grease fittings on them anywhere. There are two small holes on the top part of the bearing shell but they are not threaded from what I can see. I'm thinking maybe you have to remove the top shell and manually pack the bearings like on a automotive wheel bearing. This chipper has hydraulic feed and there is one bearing on that shaft that has a grease fitting on it, but nothing on the flywheel ones. Any help would be greatly appreciated.