Bigfoot -- here is a link to my manual:
https://1drv.ms/w/s!AiYx6DLSeiiP53x246awlGrg8B-I
The manual is based on my 2015 Vegas 24.1. A Miramar has several things that my Vegas doesn't -- inverter, multiple slides, icemaker in refrig. etc. The manual has a Vegas/Axis specific PDI checklist but you are going to have to augment it.
I'd be sure that everything operates on shore power, generator, and battery. I'd also be sure that the house batteries charge while on shore or generator power -- also that the house batteries charge from alternator when driving down the road. Also check to be sure that when the house batteries are disconnected there is no parasitic load that will drain the batteries while you are in the STORE mode. Make sure the water system operates off the water pump when on battery power. Check to be sure all drawer slides have been installed correctly.