I use a Fuji four turbine hvlp and am having trouble spraying shellac.  I have added 10 ft of hose as recommended by the mfg to cool the air. but still cannot get smooth results.  I suspect it is drying before it has a chance to flow out.  Is there such a thing as a retarder for shellac, if that in fach is the problem,. I have no problem with lacquer,poly or even high gloss oils and latex finishes