No no.no, sorry, I will shut down all the facilities except Route 68, I finished the whole 3 new heists, Im friend with the Goverment, do not pay Police bribes and you all must move to Route 68, is the most beautiful view and that is the only valid reasonn, lol
You must be driving a Sandking XL or they must be spawning in traffic to spawn the NPC modified ones. Also approaching from south on the dirt road gives 100% spawn between 9-17 game time.
I got Grand Senora Desert for my second character and he has room to be able to store Sandkings at the facility. When you come out from facility the Sandking already spawns so you don't even need to take the south approach, north works just as well.
You only ever need 1 Sandking XL stored really if you just use it to spawn another one to sell.
Here's a clip I made
Start packing it all on the Avenger, snacks and Orb Cannon included
I will have free drinks at the MC right in front of it for all of you, wines and wiskies more expensive than the Senora Sandkings, all for free