Have you had to use your "Tow Valve" ?
If the engine won't crank, she ain't movin' 'til you back-out the 'Tow Valve' nut.
Think i found it.
Told it takes a metric allen wrench - don't know size.
Too crowded to get wrench into head of bolt.
Figure if i knew the correct size i could cut/grind off...