Belgian Dark Strong

Belgian Dark Strong
(5 gallons)
8/22/2013

15.0 lbs Valley Malt pilsner malt
0.5 lbs Valley Malt toasted oats
0.5 lbs Valley Malt Special B

2.0 oz Styrian Arora (60 min)
1.0 oz French Strisselspalt (15 min)
1.0 oz French Strisselspalt (2 min)

yeast:
Wyeast Belgian Strong 1388
Strike temp 165
Infusion mash 152 for 60 min
Sparge 45-50 min, water at 170
60 min boil

1.062 OG on 8/22
55% efficiency
Mash temp seemed good, maybe I'm not using enough water in the mash.  Or the mill still isn't set right??
1.018 secondary on 8/28
1.012 keg on 9/12