How to install two EIKON modular calipers in the socket?

Hello! Maybe I shouldn’t contact you with my question, but I had difficulty installing two EIKON modular calipers. When they are installed in their base socket, the caliper starts to twist when the fixing ears are twisted on the caliper. And when it comes time to install the frame, then the frame itself does not press firmly against the wall like do not press it. When removing the frame, a bell-shaped state is observed between the wall and the caliper - (But the same condition exists naturally even before the frame is installed, and in places where the fasteners are twisted, everything is tight. So that there are no bell-shaped bases, weaken the fasteners, but this also weakens the mechanism itself in operation, specifically we are talking about sockets. It takes a couple of times to use the plug and the socket starts to loose. If you can help or advise me, I will be very grateful! If there is a solution on another possible site, then zhaluysta throw off a reference Thanks in advance!