I dont know Brett. I just switched over from sig or brodak dope which i thinned with cheap hardware store Lacquer thinner. Used it successfully for 30 + years. For the first time ever i sprayed Randolph white and Randolph thinner as a base coat, Then masked off to spray the trim. But the next day i decided to re do the tape and it pulled up the white. Learning curve I suppose. Man I miss Windy. Actually I think Sparky uses all Randolph products. He may be able to share his wisdom. My white was like rubber when i sanded it a week later. Lots of fun.
For as simple as it seems, this stuff tends to be very touchy and prone to small errors causing big problems. Most people are using car paint products, which are designed around the idea that you can have semi-skilled technicians spray 10 cars a day and have them back the next day, basically, if you can aim the gun at the car and pull the trigger, it will work.
Guys who have proven track records and professionals (like Bill Byles) are exceptionally careful with materials and process controls and get consistent results. Quasi-hacks such as myself use more forgiving materials, mostly under the direction of experts (PTG and Uncle Jimby).
Brett
p.s. while we are on the topic, I would caution everyone about using hardware store materials. I know for certain that no matter what the can looks like or what the part number might be, *what you get in this can may not be the same as what was in the last can*. What is nominally labelled "lacquer thinner" might be anything with a variety of solvents that happened to be cheap the day they ran the production line. I have a can of "Kleen Strip" lacquer thinner from a local hardware store that works perfectly for thinning K&B SuperPoxy, which is notoriously picky, and will curdle up with almost anything except the original K&B thinner (which has one extra component, butyl alcohol, not normally found in lacquer thinner). This particular can works fine, smooth just like the original, and it was dead cheap. Went to get another can, same shelf, same store, same Kleen-Strip brand, same catalog number on the can. One drop, curdles the entire cup of paint. And, it smells different.
I think this may be a bigger problem here than elsewhere, because the manufacturers are playing "whack-a-mole" with the California Air Resources Board (CARB), having materials banned due to VOC content, changing the formula, selling a few batches to Home Depot and Lowes, getting banned again, then changing it again. But with these uncontrolled materials, you have no idea what is in it from batch to batch, and what worked last time may not work at all this time.