You live in Hawaii? Lucky 
! 
Are you pinning the material down to the bed using the honeycomb pins before starting your cuts?
I only ask because that’s a high humidity area, like the one I live in, and the material will develop a slight warp as time goes on making it harder to cut through in one pass.
Since I’ve started pinning the material down (even if it looks perfectly flat, it usually isn’t until you pin it down) I’m getting complete cuts all the time.
Anyway, I thought that might be something to try if you haven’t yet. 