You can try raising it to 8.5 and watch to see if any changes. Then if needed, raise by .5 again until you see a reduction in those events.
Since you downloaded SleepyHead, here are a couple links to help you upload a screenshot, which helps us to give advice based on your data.
http://www.apneaboard.com/wiki/index.php...ganization
http://www.apneaboard.com/wiki/index.php...Screenshot
http://www.apneaboard.com/wiki/index.php...pnea_Board
Apnea Board Administrator
www.apneaboard.com
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OSCAR Chart Organization
How to Attach Images and Files.
OSCAR - The Guide
Soft Cervical Collar
Optimizing therapy
OSCAR supported machines
Mask Primer
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.