Hi Markoz, yes, I can now verify that airspeed was to low. The thing I don't understand, if the airspeed was to slow and airplane was rocking from side to side because it was close to stall, then why won't the the stall horn sound?
I know I'm comparing apples to oranges here, but when flying a actual Cessna 172 and practicing stalls before the airplane would start to buffet the stall horn would sound. Now in a large aircraft I thought the stall horn sounds before the stick shaker. If the airplane is rocking (or should I say rolling) from side to side is it trying to simulate stick shaker. Never flew a real 757, but I thought when the yoke starts to shake its about ready to stall and the stall horn should sound before it does shake. I'm not sure if the rocking is supposed to simulate stalling. If so, then the stall horn should sound first.
Anyways no big deal, I now know that I need to keep the airspeed up.
i could be wrong, but I think in the 757 AP should not be activated until 1,000' AGL and I was able to do this by lowering the nose after gear up. Doing this I was able to get airspeed up to the proper flap setting and was able to enable AP before flaps retracting.

So with that said I'd like to thank you for the advise on airspeed. The other 757 I flew, the airspeed rose very quick so I never thought that this 757 airspeed would be slower. I wonder if this is how the real 757 is supposed to act. I thought I read somewhere that real 757s climb like a rocket.

Thanks for the info
Gabe