dave,do you have a example and the amount of cars we are talking about not just one at a time?
cheers
Remember Anthony, the service/warranty listing isn't a magical list, it is a search report printed out of the mainframe on the date given at the top of the Z-fold paper with the results sorted by PSN. Just think if chassis numbes were listed, and it was sorted by the chassis number - the completion dates would be all pretty much aligned for some assembly plants and vehicle series but all over the place for others. The mainframe database had all other cars in it too, if a report was done an all PSN's you'd see the bigger picture of HQ's, Bedfords and all other cars being assembled at the assembly plant in the listing.
Because the PSN is assigned to vehicles at different times for different plants it can look very different if you fixate on PSN's as being a consecutive thing. Pagewood assigned the PSN and affixed the ADR and VIN plate very late, right at the end of the assembly line. Chassis number went on in the assembly plant for cars with a chassis number on the rail (ie HQ-HZ), but for cars with the chassis number in the body (HK-HG and LC) the number went on in the body straight after paint in the body plant. For Pagewood cars there is less scope for delay of completion relative to PSN's around after a PSN is assigned. Acacia Ridge was similar with chassis number but the PSN was assigned very early to a body as after roughly April 1973 the PSN was the BODY number, and the BODY tag went on when the body was bare metal - so there was a huge scope for delay of completion relative to other PSN's around a number. Dandenong also fitted the BODY plate early. Elizabeth is the vaguest, but from memory the PSN on these may have been assigned right back when the car was entered into the schedule, so the PSN will be all over the place. This means you can't look at one PSN, and another one 100 PSN's later for 2 x cars you might find with 8/72 compliance for example and assume all those in between are 8/72. Also cars may not actually be delayed if you look at cars with later completion days amongst others, they may have been completed from start to finish in a day, but by listing them in PSN order it looks like they have been completed late.