I mashed at 28 Sulfate, 35 Chloride (in hindsight a bit on the higher end?) and Calcium of 26ppm
However, my mash pH ended up being low (4.95) so I added a ¼ tsp of Chalk to bring it back up. This ended up pushing the Calcium above 40ppm. Not sure why, perhaps the shop was slightly heavy handed with the acid malt or my scale is a bit off.
Appreciate all the feedback so far, I'll be tweaking some things next time (should have posted earlier!)