Slowly coming back

I'm yet to have a great result, but I have had some regular ones. This Sunday I made it deep in the Full Tilt $200K and in the Stars $1 Million; I won $380 in the Full Tilt and $1400 in the Stars. Later I almost made the final table in the Stars $100 Rebuys, got 11th for another $1146. Tuesday I made the Final Table in the $30 Rebuys at Paradise, got 6th out of 1225 and won $3914.68. Yesterday I made the final table in the Stars $150, got 4th out of 482, good for $5061. I have made some adjustments, but mostly I'm coming back to winning my 80/20, 80% of the time, to win 50% of the time my coin flips. I know things will get better.
I still have some trouble playing marginal hands in a final table. My last hand in the Stars $150 was A6, again the dreaded Ax. We were playing 4 handed, I was the short stack with about 92k, but with 4-8k blinds, I was not desperate, UTG folded and I was in the button with A6, what to do, any raise will commit a lot of my stack, and if they reraise, I'll be committed to call; if they just call the raise and stop and go me in the flop, what am I going to do?. Should I fold A6 in the button 4 handed?, no way, so I decided push was the best course of action, BB called with 77 and that was it. Really, I just don't know how to play this hand with the conditions described. If any of you find a better way to play it, please post your opinion, I'd appreciated it.