Hi! I'm glad you like it so far. I made this mainly to meet my group's specific needs but I figured it might be a very specific niche some others would like filled as well.
1. Nope, that's a mistake! I'll fix that ASAP!
2. Yup, same as in Mork Borg. 60-66 is the HP cap. This is an OSR game though so feel free to hack it if you want to play longer campaigns.
3. In my mind yes, but this is one of those vague rules where I'm leaving it up to the GM to make a ruling as they wish.
4. As the previous answer :)