Ohhh I get it now. 2 magazine chapters = 1 tankobon chapter. These volume assignments are meaningless. The latest translated volume: "Vol. 8 Ch. 35", is all the way back in Volume 4 tankobon. Way behind.
Thanks for the extras! In case you didn't noticed you missed the extra page for chapter 35, and I assume you know you didn't do the 4-komas at the end, but I don't know if your source didn't have them or not.
Unfortunate. I haven't been able to find any alternate fanlations, either. I've been reading this and the spinoffs since the anime came out. Sad that I can't keep up with the japanese release.