Where do y'all buy hitch pins? Everything I've used ends up bending like crazy... I've even used used a grade 8 5/8 bolt. Not threaded with a nut tight but as a pin. I know they make crazy strong bolts that run like 75 bucks a piece from fastenal or somewhere like that. Is that my only option besides replacing them every 5 hooks or so? Does someone actually make a pin worth the price? Thanks