Rick is one of the only guys who I trust to work on my car. Might be worth letting him determine if it indeed needs anything. If it does, there is usually some decisions to be made based on future desires/plans for the car. ie) new, stronger axles vs used; new posi plates, new gears in long term plan, etc etc.
Better to do all this stuff at once than to take rear end apart 2 or 3 times.
Also, Rick fixed me up on leaky axle seals by insisting on the Ford OEM ones, not the ones in the Ford Racing kit.
The man knows his stuff; and he drinks coffee with milk, Ross prefers ice cappuccino.....just sayin, lol