Help!!!! I'm getting smoked by rice!(kinda long)

[90'5.0 Conv]

Alright, here's the deal. I just got back from the local 1/8th mile track and my car is running 10.20's. This isn't much different from 2 weeks ago considering the heat now here in S. Georgia. Two weeks ago, I ran a best 10.05 out of about 5 runs down the track. I don't know what the deal is as far as me running so slow. My car pulls hard, shifts firm and runs great from what I can tell. The AOD shuffle isn't working. I've never been able to do it unless I get out of the throttle so I don't know what's up as far as that goes but I imagine I could pull up some better times if I could hit second. First to Third is getting real old and real slow. I have 4.10's that I will be installing here real soon so I know that will help but I don't think my car should be this slow. It was about 85 degrees today at the track and my car doesn't spin off the line. The track is very well kept. My mods or lack there of are listed in my sig. so if you could help in anyway, I'd appreciate it very much. I'm about ready to pull my hair out! Civics and an eclipse were consistently running 9.80s down to 9.60's. This is getting embarassing As far as how I drive, I manually shift my auto at about 4800 rpms and I do use the stall converter when I leave the line. Thanks again for your help and if there's anything else you need to know about my car or what not, just let me know.

Thanks James