Thanks for sharing your results! A few points to make here:
1) Your NUMBER correct (27/41, etc.) is only one of several factors that determines your score. People are often surprised at how many questions you can miss and still score high on this test, and that's based on the adaptive scoring algorithm. To understand the scoring algorithm better, I'd check out this link: http://www.veritasprep.com/blog/2010/08/understanding-gmat-scoring-algorithm/
The short of it - you can go 27 for 41 and, provided you're getting high-difficulty questions, still score well into the 90s in percentile.
2) The 800Score tests have trended easier on the verbal side for some reason, so you're right to notice that. I'll bring that up to their developers again to see if they can even that out a little bit.
3) What's most important about taking practice tests is what you learn from them, and not necessarily your score. Scores on practice tests are good but have some wiggle room on them if only because only GMAC has its proprietary scoring algorithm and the test manufacturers can only seek to approximate it. Gauging your performance, though - which types of mistakes do you make, how well are you pacing yourself, how do you hold up for a 3.5 hour test, etc. - gives you insight into how you can (and need to) improve, and that's where you can truly benefit from the experience. Use your practice tests as maybe 20% "indicator of where you stand" but 80% "blueprint for how you can improve" and you'll be much more successful as a result.