I think the center support bearing on my '06 Ram is starting to go. Noticed it pulling my camper last week. Occasionally when starting from a complete stop I got a short shudder. U-joints seem ok. Never happens when the truck is unloaded and not a constant issue. Do they go bad slowly? It looks ok- no visible tears in the rubber surrounding the bearing. From what I can see I could unbolt the rear section of the driveshaft to change out the bearing assembly. Anyone have experience or advice? Any tricks or special tools needed? TIA