Guns love and technicals

I’m new to bl3 but have already put countless hours into it (max level) and am playing around st mayhem levels and I want to try a build as moze so I need the sapper mod. I read around as to why it wouldn’t drop and I found a reddit from 1mo ago that said moze and flaks drops are switched so I keep getting flak mods and flak keeps getting my mods. Can you please fix this soon