Thank you all for the compliments, they mean a lot to me. Bob, I thought about pinning the guide, but it fit so well I only needed to hold it in place.
I decided I have enough of the major body work done to cut out the front windows, I waited on this step to keep the shell as strong as possible.
I've got the side doors lightly scribed and I'm happy with how straight they are this time. I did try to scribe the right front door again and failed miserably. Again, I think the problem is the body filler and pinholes keeping any tool from making a smooth clean scrape. My next thought is to try using some photo etch saw blades. I've never used them before and don't know what ones I should get. I also need to find a way to fill in the scribing on the back doors as they are real deep.
Other than the scribing, I am gettting real close to a final sanding and priming.