Grease is applied to seals and bearings for one reason only, to reduce friction. Friction produces heat, excess heat through incorrect installation destroys bearings.
Is it true that 40% of all bearings do not live their full engineering life due to bad installation practices?
If the tandem wheels are not square, call your service agent for an alignment. It is quite likely that your u bolts have come loose and your rig has sustained some shock loading during your travels, This moves axles backwards and out of alignment.
Hot Joints are a common problem to find in electrical connections on your trailers and inside your caravans. A hot joint is an electrical connection that becomes loose over time or connected by only a few strands in the connector ferrule.
The Lanyard on your breakaway switch is likely to have been installed without being shortened. A simple adjustment could save your life.
If you are heavy on the scales, shift weight from the front of the axle set to a more central location. This action will lower the weight on your tow ball, allowing your vehicle to become lighter and therefore brake more effectively.
Bearing Buddy® is a machine fit as opposed to a compression fit. Machine fit sizes are not as flexible as compression fits. Unless you are aware of precautions that need to be taken, you may lose your bearing buddy® on the first bump in the road.