How to say “This master controller feels stiff; has anyone reported it?” in Japanese

In Japanese

このマスコン、動(うご)かすと硬(かた)いんだけど、誰(だれ)かもう報告(ほうこく)した？

Kono masukon, ugokasu to katai n da kedo, dareka mō hōkoku shita?