Mesh basket in mash tun - efficiency loss?

[emprbasist]

I'm wondering if anyone here has some experience with this.

I currently use a brew bag ("The Brew Bag") as a primary filter in my mash tun. Long story, but I've found it helps a ton with slow mash recirculation and sparging issues versus using only my domed false bottom. I'm upgrading to a bigger mash tun and I'm considering buying one of the Arbor Fab brew baskets (or Utah Diesel Supply) to replace the brew bag. There will obviously be a gap between the basket and the kettle (tun), maybe as large as 1 inch gap all around. I'm wondering if I will see a significant drop in mash efficiency due to my sparge water being able to flow around the mash basket during fly sparging.

Thoughts? Am I just being paranoid? Thanks in advance!

 

[Pappers_]

Any gap would lessen efficiency, I think. But honestly, I don't care much about efficiency as a homebrewer. On our scale, another pound of malt doesn't really matter one way or another.