Need help with pulling dash

Well I guess I am stuck right now.I have to replace the heater core in my 93 vert.I have read some articles on replacing this and checked out some web sites on this.Currently I have stripped everything away from the dash,removed the all the obvious screws along the top of the dash along with the bolts on the side+ the ones under the speaker casings.I also dropped the steering wheel.The problem as it appears to be is this:the dash will not come away from the drivers side.No problem on the passenger side.I have looked everywhere for a screw or bolt still in place but can't seem to find one.Is there a bolt or screw under the dash maybe by the pedals or maybe behind the gauges? Thanks for any help,and yes I did do a search and read the recent threads.I also have the haynes manual which isn't to helpful for this application.
Jim

Is it the bolt that comes strait down from the instrument cluster where the steering column is normally?

Ijust wanted to take a moment and thank everyone(including V8 only),I changed out my heater core and everything appears to be normal.I don't ever want to do that again,what a pain.I did read all the posts and threads I could find on this subject,and it was pretty much dead on.As far as the bolt I couldn't find it was a 13 mm bolt coming almost straght down directly under the center of the gauges where the steering wheel was.Now that I have finished this project I can concentrate on the fun stuff,gears,cam headers,intake,better exhaust,subframes,5 lug conversion,and maybe some thumper heads.Oh- I think I'm addicted-to making sure rice always gets cooked!