Duration and time problem in P6 - Headache in P6

Dear All,

I have started my project on 24^th July 2011 – 7:00 am and my completion date of project is 31^st Dec 2012 5:00 pm. I am using 6 days 10 hours working calendar for all activities and my WBS is also using the same calendar as Default calendar. I noticed two problems in my program.

1. Some of the activities are starting at 11:00 am , and some by 1:00pm , due to the reason if I give FS relation , then an activity instead of starting on next day , it start on the same day 11.00 am. How to solve this problem.
2. The second problem is , if I assign duration of activities of 5 , P6 takes only 4. For example suppose I start and activity on 6^th November 2011 (Sunday is working day) the activity should complete on 10^th November 2011, but it is completion on 9^th November 2011. The calendar I have already checked , that is not a problem , kindly explain.

Regards,

Haresh Jayanth