I have mine set at 4 currently to free up some frames but if its not at 5, is it correct to assume i'll never get a perfect 100% overcast cloud ceiling where i cant even see the ground at all while over the clouds?

Hi Joe,You need 3 or more layers so you are OK.Hope this helps,JimActiveSky Sales and Supporthttp://www.hifisim.com/images/asv_dev_team.jpg http://www.hifisim.com/images/asv_proud_supporter.jpg