OK, thanks. This is a completely new world for me, so I'm reading a lot (probably dangerous) and hopefully learning. I did a search on 'heritage air fuel ratio' and saw some banter on other hd forums that appeared to me to say that 13.x was pretty lean - Granted it was for an Ultra, but I would think the mixtures between big twins dont deviate that much.
If you want me to post the link to the other forum for comment, I can - if i can find it again.
Thanks for the help!