I am definitely not an expert on it, but the duel cases make quite a bit of noise when driving down the road even if they are filled to the proper level. My cases were installed by ORS with the MCR10 adapter. The shop owner took me for a ride before I picked the truck up to let me hear how much louder it would be than when I had a single t-case. Also, I have a FROR x-member so that is probably contributing to the noise/vibration.
