Embarrased that I'm asking

I have had success w/tight filters by slipping a flat chisel <or equivalent> between filter and wrench. This keeps wrench from slipping and distributes some of the force to more filter surface area, known as areas you haven't crushed yet. :0 Also handy to have a cheater. (EMT works great).. KD was my favorite wrench of choice but haven't been able to find the ones that work best...on a tight filter, flimsy wrenches always twist sideways at handle pivot..:(