(↑山形の英語よりははるかにマシ) 改善できる点はたくさんあるが、とりあえず・・・
“I am tired of having to translate their illogical Japanese reports into English.”
These reports are written by engineers who have no training or background in technical writing, so that naturally the reports often have numerous logical flaws.
I suppose the engineers would never imagine how difficult it is to translate these barely understandable reports into English.