Pretty much a perfect brew day today running my 3rd batch on the 10.5 AF. Volume and gravity readings were all as predicted, pretty happy about that.
Ended up at 75% mash/lauter efficiency with a full volume mash, right on target. Did a 90 minute mash, waited 15 minutes to start recirculation and raked the top of the grain bed every 15 minutes. Mashed out at 168 for 10 minutes and squeezed the hell out of the bag to get my pre-boil volume. I'm planning to pick up a mill in the near future, should be a free 3-5% right there.
For clean up I put about 2.5 gallons in, dumped in some PBW, brought it up to 120 and used the pump to run the mixture over everything. Tiny bit of scrubbing on the kettle and grain basket, otherwise everything rinsed off nice and clean.
I think I'm going to keep it.
I'm considering bumping up my grain absorption slightly and doing a 1 gallon sparge on the next batch. I really had the put some effort into the squeeze. What I'd lose in efficiency by not squeezing quite as hard I should more than make up for with a sparge. We'll see, sounds like more work.