What can I do to troubleshoot this?  When I test the font in TTF, it looks fine.  When I test in OTF, I get strings on some of the letters here and there.

I got the same thing, working with TypeTool a year before your effort. Can't remember who, but one of the wonderful Fontlab people told me it's a matter of scale. Use Font Studio, if you need to construct a font family, or even a font. TypeTool is better suited to on-the-run tiny touchups of a single character in just one font, for an existing font family. Secure TypeTool edits with a converter like TransType.
 
Got exactly what you did. Spider webs. The whole experience was fascinating, educational. A few months later, Windows wasted my spider font (BSOD). Need a better tool to fit system metrics. In support of reasonable perspective.

I got the same thing, working with TypeTool a year before your effort. Can't remember who, but one of the wonderful Fontlab people told me it's a matter of scale. Use Font Studio, if you need to construct a font family, or even a font. TypeTool is better suited to on-the-run tiny touchups of a single character in just one font, for an existing font family. Secure TypeTool edits with a converter like TransType.
 
Got exactly what you did. Spider webs. The whole experience was fascinating, educational. A few months later, Windows wasted my spider font (BSOD). Need a better tool to fit system metrics. In support of reasonable perspective.

Thank you for your words Marko. Even I was riding same boat for quite a time. Now with your input this software makes sense. I will construct my own family now. Tired if Spider webs.