Sentence Correction

Hi people.

Thank you for making this awesome awesome forum. You are giving GMAC a run for its money.

I had started with Kaplan for SC and I was doing OK.
After a lot of research on this forum, I came to this colculsion that MGMAT and OG is the best strategy for SC.
After doing MGMAT SC chapters 1-6 and doing corresponding OG questions I found that :

1. Questions IN OG did not match the MGMAT chapters properly. ( I do have the latest MGMAT and OG editions) Has anybody else felt this way ?
2. I did a lot better on kaplan verbal workbook than OG !! I was petrified.

Please through some light on this. I am sure this forum has given me the right advise on OG/MGMAT for SC.

Thanks.