Same I want to confidently score a little higher pre-BR but progress is really slow...
I started using a watch after I saw Dean's post. It has helped me with skipping questions. If it takes more than 1.5 min I skip it and come back to it.
The guy in this video claims to have gotten a perfect 180 and did so by redoing about 20 different practice tests repeatedly (there were only about that many PT's available when he was studying). http://www.youtube.com/watch?v=_sOsE0OlR00