Looking at what you've recently bottled, how often do you do 10% ABV brews? Lautering efficiency drops with larger grain bills; if you did a 10% beer as all-grain, perhaps that was the issue?
And with a wee heavy, one technique to boost the gravity is by a very long boil, so one does not have to collect all the OG from the grains.
For ex, you may collect 1.085 and boil it down to 1.105 or so. That also creates the caramelization flavors of the style.