Force grease in where? Pictures or a diagram would be helpful. I'm not familiar with this newer axle, are the bearings and hub a modular system with a hub like on an independent front suspension. Or is at like the older school axle with tapered roller bearings.Please lube your hubs fellas. They'll literally last forever unless defective like the OP's. Pull the ABS sensor and force grease in there when nearly new and then every 75-100k. You can feel the bearings loading up with fresh lube while spinning when adding grease.