q1: "When an older Tenant begins to Decline, add +1 to their decline gauge (d20) and roll the die. If the roll is equal to or below the value on the decline die, the Tenant passes away".
Hmm, if it begins at 1, it is a 5% chance to roll equal or under (lowest possible value ). I don't recall if I define when you check for decline otherwise and it's pretty vague. Something for me to look at later and specify. I also noticed a spelling error (missing space) on that page as I was looking. Thanks for drawing it to my attention!
Q2. Seems correct :) hopefully it works.
Q3. Time to make the food, good question! No difference between Expended and used.
There will be many such cases of loose or broken rules, hope you still enjoy creating a narrative :)
Please enjoy your time with slum lord!