*bump*
I don't think it matters what the fertilizer was meant for or how strong. Fertilizer is just fertilizer. If it is stronger, dilute more. If weaker, dilute less. I would just super dilute it if I were you, way easier to fix underfed plants than burnt. Problem is those general fertilizers dont have the micro nutes you want. I make my own fertilizer at home. I follow the recipes of Gil Carandang, he's got a new site with all of them on it. The huge bonus is that these are basically free, just takes a little time to make. I use the fish fertilizer one the most, its awesome cause it has all the micro nutes you want, and feeds the microbes that feed the plant. Awesome stuff. Anyway here's a link to that page: fish fertilizer. I love this guy's stuff, seriously everything I've tried from there has been gold. At this point the only store bought fertilizer I use is a super cheap super basic 10-10-10. A tiny bit of that the whole grow, then using all Gil's recipes through each stage. Love it, so much fun. Product tastes amazing.

Regarding your last grow, I'd say that was a curing issue. If it keeps going out its just too wet, didn't cure long enough.