I actually just finished the grouping section. I think that you should keep practicing. If you're not confident, just keep at it and that confidence in eliminating rules will come.
dude, rules changed... this isnt allowed anymore (not that I care, just giving you a heads up)
http://7sage.com/discussion/#/discussion/15/discussion-forum-rules
#7
I second @"Nilesh S"
I'm pretty sure it would be against rules to post actual screenshots of the stimulus. But if you use referencing such as "PT 35 S1 Q15" and then post your question about it, then it should be alright.