[dеiтайожни]

I think it has something to do with comfort, head support, position, etc. I had that happen in my H3 semi-regularly, but not as severe as you. I always thought it was because I bottled up my road rage and just used the truck for intimidation instead of beating people up at red lights. But after getting my H2, there has been no problems... so that's why I guess it's a comfort thing.