Another observation from the field. Through the years of observing original package trays (in situ), I found they had variances in how the edges of the front drop-off were trimmed. Some left a bit of an angle on either side; inconsistent with the amount. Lacking Mr Speegle and other's dutiful note taking, I cannot quote their serial numbers. One was a car from central Colorado, others at the 84(?) Anaheim national, one in Pensacola from elsewhere, and my own car.