Q.2yrs Citrus With Pale Yellowing Leaves
2yrs research and questioning on the above conditions… 1)-dilemma is we have mole underground tunnels Throughout this planting area -no idea how to determine if the mole/grubs Activity is the cause or not?? 2)- am interested in new treatment/option …Layer of worm castings +..handfuls of citrus food + ..layer of azalea/camellia acid food (Thank you much for your time)

Certified GKH Gardening Expert
That sounds like an overload of fertilizer at once. These articles should help:
https://www.gardeningknowhow.com/edible/fruits/citrus/curling-citrus-leaves.htm
https://www.gardeningknowhow.com/edible/fruits/oranges/yellowing-orange-tree-leaves.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/tip-on-water-requirements-for-citrus-trees.htm