I'm new to this too, but what I've found is that a candle is a system. Wax, wick and scent work in conjunction to produce a wonderful candle. So dumping more scent into the wax won't do anything necessarily other than frustrate you. If I were you, I decide what sort of candle I wanted to make, pick a wax, and then test, test, TEST with different wicks in combination with a good quality FO. Also, record your results for every candle. Change one thing with the next batch. For instance, you have Wax A, Wick B and Fragrance Oil C. You love the fragrance, but it doesn't smell strongly enough. Experiment with another wick. Don't change two components because you'll never determine what the problem is. Good luck. I'm loving making candles, but it is a lot of testing!