Comparing my time slip to yours they look about the same (which I guess I should expect sense I was only about 1/10th quicker) But from how it sounds, you need practice launching, which I am guessing you already know, while your 60' wasn't bad it can always be better. Are you pre-loading your drive-train(e-brake on and clutch slightly out)? What rpms are you launching at? I know when I wasn't pre-loading the drive-train I had to launch around 2.25-2.5k rpms to get that little bit of squeal and then catch.

Also at the track weight makes a huge difference. This year I plan on even siphoning out my windshield wiper fluid and removing the passenger seat. But if it makes you feel better for my run I had the backseats removed and only a 1/4 of a tank of gas (which was still more than I wanted). Also I believe you said you are running stock tires. I'm not sure if you did anything to them, but all my research says that our stock tires (and most street) tires preform better if you DON'T do a burn out and if you keep them inflated correctly. Everyone is normally all over deflating the tires, but this is for certain street tires and drag radials. So hope that helps some.

Lastly, don't give up, I don't know if you saw all my time-slips last year but my first one I ran a 16.891 and just through practice of launching and shifting did i get it down. I don't know how far away your track is, but if its far, I'd go out into the country with no one around and practice launching, just from 0to40-60mph. It will improve your launches and still be rather safe sense you are not speeding, but still stay safe and don't give up!

*Edit*
Forgot to mention, not sure what your rev limiter is with MS, but I was shifting at about 7300 for that little extra oomph, that might help you as well, best way to determine this would be to look at your dyno and see when your power band starts to fall off