Higher Than Expected OG- Dilute to Bring it Down?

[snu164]

I recently brewed a Peanut Butter Porter. When I finished, I had a slightly higher than expected OG, with a slightly lower than expected volume. I can think of two reasons for the high OG:

1. I had a higher than expected boil off which could be remedied by adding sanitzed water.

2. The high OG is the result of the proteins in PB2 messing with my hyrdrometer creating an error in my reading and the low volume is caused by some unrelated reason.

Here's the recipe:
Brew Method: All Grain
Boil Time: 90 min
Batch Size: 5.5 gallons (fermentor volume) (I wound up with 5g)
Boil Gravity: 1.049 (Actual 1.051)

STATS:
Original Gravity: 1.062 (Actual 1.065)
Final Gravity: 1.021
ABV (standard): 5.41%

FERMENTABLES:
6 lb - American - Pale 2-Row (52.2%)
1.5 lb - American - Caramel / Crystal 15L (13%)
1.5 lb - American - Carapils (Dextrine Malt) (13%)
1.5 lb - Flaked Barley (13%)
1 lb - American - Chocolate (8.7%)

MASH GUIDELINES:
1) Temperature, Temp: 155 F, Time: 90 min, Amount: 16 qt
2) Sparge, Temp: 170 F, Time: 10 min, Amount: 16 qt
Starting Mash Thickness: 1.4 qt/lb

OTHER INGREDIENTS:
3 oz - Cacao Nibs, Time: 5 min, Type: Flavor, Use: Boil
13 oz - PB2, Time: 5 min, Type: Flavor, Use: Boil
3 oz - Cacao Nibs, Time: 5 min, Type: Flavor, Use: Secondary
13 oz - PB2, Time: 5 min, Type: Flavor, Use: Secondary

I realize I didn't overshoot by much, but since I missed my volume too, should I dilute to bring it back to target? For the record, I will not be adding PB2 to my brew kettle ever again. Peanut butter does not flow well into a carboy.

 

[cap]

I have diluted before when making the cream of 3 crops recipe due to much higher than expected efficiency. In that case I determined that my pre boil OG was very close to my expected OG post boil is i removed 3 qt of wort, for a separate experimental batch, and replaced the lost wort with water before the boil. I decided to dilute so i didn't have to adjust my bittering additions and to keep it more sessionable. However in your case I would just relax since your only a few points off, I would rather have less volume than risk diluting flavor.