cav551:
It is the position of the 5th wheel in relation to the axles that determines the distribution of the unit’s axle weights. The position of the trailer pin only effects the total amount imposed onto the unit and thence the now greater, or lesser axle weights.
He has a fixed 5th wheel. If you have two identical trailers with identical weight but the pin on one of the trailers is deeper, then more weight would be over the steer axle when hooked up to the the trailer with the deeper pin wouldn’t it??