First, my thanks to Scott for enlightenment on the racks & tanks subject. Hopefully not to wear out the welcome, here are a couple more questions:

1. Until recently the eastbound Q train (QFRNPP?) was a regular thru Blue Canyon in the late afternoon or early evening and typically carried 20-30 refrigerated loads mixed with 40-50 mostly boxcar priority merchandise loads. It was notable for being sufficiently powered (4+2) to usually be able to make near track speed up the hill. Lately the perishable loads seem to appear randomly throughout the day on various drags and the distinctive Q makeup is no longer obvious. There was no obvious westbound counterpart, but it could have been a nocturnal visitor. Is the Q still alive and is/was there a w/b priority symbol?

2. For many years the e/b Z train (ZLTCS?) was a regular morning visitor to Blue Canyon, over time varying from 6-9 am and initially averaging 50-80 loads, then decaying to a mere handful of loads and last year working back to a typical 30 or so loads. The w/b Z (QCSLT?) had a much more consistent tonnage and was fairly regular in the mid-aftenoons. Am I suspecting correctly that the numerous slow orders which have plagued Amtrak across Nevada have also pushed the schedule of the e/b Z well into the pre-dawn hours and are the primary reason for the very erratic appearance of the w/b Z at most any time of the day if seen at all over the last several months?

Thanks once again in advance for sharing your knowledge.