Common sense says Shinsen got it wrong. I don't need to be fluent in Japanese to know that.
Why would Alto tell Michel, "you better not forget this!", when Michel is hazing/punishing him? He wouldn't, it makes no sense. What does make sense is what shows up in the other subs, which is "I will remember this!"
Why would Michel have Alto do 25 laps with the EX-Gear powered on? That would only make it easier. The suit was designed for increased mobility, firepower, and survivability. We've seen it in action twice so far (not counting the hazing). While the other subs differ on the exact translation, the gist is the same, its easier with the suit powered on (so don't do it).
I don't need to be able to translate the dialog myself to know that what Shinsen put was wrong. Hence, you are wrong. Get over it and move on.