Testors enamel primer question.....help!

I just went ahead and ordered some fine surface primer from Tamiya for my next model.  The Testors is finally pretty much cured.

Hi flygilmore,

I've had exactiy that problem with their grey primer - the reason I don't use it anymore. I posted of my problems here a couple of years ago and got advice including to let it cure (dry?) for days to thin it with lacquer thinner. I let it set for a couple of days with no joy. Cleaned it all off with mineral spirits and tried thinning with lacquer thinner. It did dry 'completely' but after several hours. And, frankly, I still don't know what caused the problem. I had cleaned the sprues with soap, water then 70% isopropyl alcohol.  I've gone to all acrylics since (except for Alclad) and haven't had a problem. Wonder if your Primer could have come from the same batch as mine. BTW, I had used other Testors enamels and they are slower drying but within an hour or so - NOT days. Just my experience.

I have been doing some searching and read where another fellow had a similiar prob.  I cleaned my parts while still on the sprue with 91% Alcohol but wiped and dried them very good I thought.....could the alcohol be the prob. as in this mans case?  I would have figured that primer would have been good to go within a few hours.