hi chopper, just to keep you updated: i have won back all the loses from the 6max tables and a few buyins more. actually i was running pretty bad for almost 30k hands at fr, treading water.... but have run up nicely through the last 20k hands. i isolated some major postflop problems and seems i have fixed them at fr:
(i) i was calling too many large river bets. so you were correct with the assessment above that i was letting myself get stacked too much.
(ii) i was not folding TPTK or TPGK enough when getting my bet raised.
(iii) i did too much c-betting. simply got called much too often making this a major leak. i try to stick to c-betting when i hold air now only when i am the preflop aggressor and have position else i limp/fold mostly.
i feel i have got a much better grasp on when and how to be stealing blinds. definitely a very worthwhile addition to my game. mostly i steal with any Ax, 2 broadways or scs now. running at 24% for blind stealing attempts. fr pfr running higher now then before: 7%.
my whole game has seen a major revision really integrating a lot of the above suggestions. wasnt so much fun for a while since the results were little encouraging. but then as always with evolution - things must get worse first before they can get better.
well as to giving 6max a fresh shot i have decided to build a bit more bankroll first. currently i hold 25 buyins. will up that to say 40 then move. more bankroll should help to relax better and sit through some early loses. planning though to stick very near with my regular fr play first, giving me some pt data for say 20k hands which i can then analyze to plug leaks or find lost opportunities. one of the problems is really having a solid enough bankroll to buy me enough time to analyze the new game.

cheers