Eecen - I don't seem to have the problem anymore, but I could not tell u why honestly. Just maybe my hair's in better shape, 9 months after my OP. I definitely think now that the moisture-protein balance is the #1 influence on how your hair will turn out on any given day. Sorry I don't have the magic answer!
fine, thin, normal/(low?) porosity. Mod-CG. Usually I can't co-wash more than 1x a week, & sometimes I have to use T-Gel in rotation due to scalp issues.

Co-wash: VO5 Volumizing
Poo: Giovanni 50:50
RO:TN, Nexxus Youth Renewal, Alba Coconut
PT: gelatin PT, ION EC
Stylers: Giovanni mousse, TIGI Curls Rock amplifier (a-cone), Curls Rock Strong Hold Mousse
Gels: SCC spray gel