That's my theory too and I told them that. Let's see what they try next ...Sri, that single crossmember test they did is suspect, in my mind. They removed a whole bunch of material from a stock skid, hoping to improve vibration. It is much less stiff in that cut configuration than stock, so it's not surprising to me that your vibs got worse. You did get a result tho... Less stiff skid, vibs come on earlier. If they were to complete that test properly and bolt in a nice frame crossmember, that was very stiff and properly supported the transmission, something like the Savvy support, or the gen-right one, then you've got something to test.