Schubert op. 78 (D894) fingering

[cloches_de_geneve]

Hi, I am at the last movt. of Schubert's G major sonata (op. 78, D894). As I find some of the opening passages a bit akward, I was wondering about fingering alternatives. Do you have any suggestions for:

- Bar 3 (my left is at its streching limit to get this 11th chord, how do other pianists solve this?)

Then, I would be interested in knowing what fingering is used for all the patterns of thirds in the main theme, specificall in bars: 

Bars 11 and 12
Bars 16 and 17
Bar 19

Any suggestion is very welcome!

[desordre]

 Dear Cloches:
First, please let me correct two things: the chord is in the second measure, and it's not an 11th chord, but a suspended fourth.. About the fingering, did you try to play both C and D with the thumb of right hand? Then, in the second beat (when the tenor procedes to A), just slip your right thumb back to the D alone.
About the thirds of bars 11-12, I would use 12 13 24 35 13 24 35, with a slight pedal (less than half) to link CE to DF#. Then, in the lenghty run (bars 16-18), I would start with the same pattern till F#A, and then 12 13 24 35 24, again with the tricky pedal. 
Or just play everything with 24 and press deep the pedal... 
Hope it helps!
Best!

[cloches_de_geneve]

Dear Desordre,
Merci, you are right about the chord, I meant to say an 11th strech. By now, my left got almost used to the strech and I have to experiment with your fingering and my original one. Your suggestion puts less strain of the left but somewhat reduces freedom for expressive phrasing in the right - at least to me. Thanks a lot for the other suggestions and the music sheet, which provides other useful alternatives - they are all currently "on trial"!