Ahh right, that might be an issue. I'll have a look around the web tomorrow to see if this is a peticular issue with this controller, or if there is different versions or something. And I was planning to use it on a new robot I'm making which is gonna be like 2mm steel all round so it may be a problem. I'll have a proper look later as it is to late now. If it is an issue I could just use my planet on the new one, and use it in bruiser insted.