I have a 02 Nitro LX 700.The trailer has the Trailer Buddy hubs,the ones with the grease fitting in the end of the spindle. Want to check the bearings and replace or repack. After reading up on this type of system it looks like I need to find the orginal type seals and bearings. Does anyone have any info on this or experience with type of system also any info on using the grease fitting to grease the bearings. Thanks Bobby