If you push your throttles forward, I think you might get control.  I think the last flight I did I pushed them only to 1.10, hit the EPR button, and just forgot the throttles.  In other words, when you hit the EPR button are you giving it a chance to wind up to take off thrust on its own?  Or are you doing something manually with your throttles?

I will pay very close attention to my next flight.  I do know that the knobs on the pedestal are a potential gotcha.  the one on the left has to be set for AUTO, skip the next knob (brightness I think)  and on the double-knob the lower one has three positions, but you can't see them.  So just click back and forth until you are confident you are in the middel (both).  Then click on the upper knob to push it in.

When you take off, you should verify that the correct takeoff thrust is set, and "the captains hand must be on the thrust level until VI."  With brakes on, I slowly advance throttles to 1.10 EPR.  Then don't move them anymore.  With your Auto Thrust on, hit EPR.  Without touching your throttles, your engines should wind up to take off EPR.

I suspect you are messing with your throttles after advancing to 1.10.  Don't.  Just hit EPR and monitor for something weird happening.