Ag hoppers and sticky products

Im in the market for a hopper to supplement my end dump work, and I've come across a weird spec (at least for my area) trailer thats 43x96x78 with ag hoppers. It came from the north west and hauled oats, fert, etc. The trailer is very clean and $10-$15,000 less than a comparable with commodity hoppers. Anybody with real world experience in using ag hoppers for meal, ddg, byproduct meal, hulls etc? Will this good deal be a headache or will it work for a trailer that I'll use 50% of the time? * This is not my first hopper, I understand the difference in slope angle and hopper opening of commodity vs ag clearance tubs. I don't need a lesson on how to spec a hopper. I'm looking for first hand experience *