I don't know about the bottom ones(switched to TRX ones) but I'm runing shocks that are about a year old with no problems. I'v never seen these shocks leak, its sooo nice to go 2+ months without having to think about shocks
IMO you should stick with the AE spurs, they are cheaper, easier to find and offer a wider rang of gearing then the stock ones...
so your runing 3As in the front and 3Bs in back???
IDK if they will fit(hex depth), but kyosho makes an all alloy hex+axle for the front of the RB5 that is the same price as just the alloy hexes.
check the front bulkhead screws under the front bumper before your main, they WILL back off and alow it to move.
for the steering rack screws, thread them from the top and use a nut+shim, I'v striped more than one out.
IDK why the kit came with the POS ballcups but the ones that come with the RT5 pop off less often and last longer then the stockers...
pics of mine when I get home...