increaseing repair and loot range also block place range

[falcon470]

so as the title says im looking to increase the range of looting items primarily zombies as ive installed a mod for that and placing and repairing blocks, ive done some thing similar with the skinning knife but to keep things balanced I nerfed its entity damage and made the corpses only have 1 health so its not a viable weapon other wise knife would be doing way too much damage is all of this or some of it possible and if so how?