Usually there is a learning curve with how much product to use. Why not try using just a little less product than you did when you got weighed down, and see if that takes care of it?

If my hair is frizzy due to dryness, I mix my regular leave-in condish with a dab of a heavier moisturizing condish, and it perks my curls right up! I could never leave in the heaver condish on its own, it would be much too rich and heavy for my hair.

Also, concentrate product application to the hair shaft and ends; too much product at the roots will definitely weigh you down.

Hope that helps at least somewhat.
http://public.fotki.com/opera-curls/ (I cut my own hair)
Pacific Northwest girl, color-treated fine 3B, med-low porosity

Products: Suave Coconut condish, Giovanni Direct Leave-In, FSG or KCCC, AfroVeda Shea-Amla Cream
I LOVE HENNA!