Pardon the pun but "back to the Future" is still a popular topic. I use the new Canadian Market product "Pledge with Future Shine' and by airbrush. ($5 at Walmart will get you enuff for a lifetime of modelling) Thinned with 1/3 Isopropyl Alcohol and 2-3 thin coats with min. 6 hours drying between. I do let it dry at least 48 hours before decalling. I recall spending literally days searching through all the on-line info before trying it after the original product was discontinued. The one and only problem it presented was when thinned with water, took forever to dry. Since changing to the Iso for thinning it's been a pleasure to use.
I believe there was a very informative article (list of product names for the different Country's) on Hyperscale or maybe Swanny's however that was some time back. If you search it on Aeroscale I'm sure there are numerous links in the various articles. Hope this helps.
Cheers,
Lance