Is this a serious suggestion? I haven't heard that one before.Use seran wrap to keep the corners in place. You have to stretch it tightly over the corners. I would do it after letting the corners dry a bit and until you are able to place the corners down somewhat. Leave the wrap on overnight and you'll find that the corners are perfect.
 
 
		 
 
		 
 
		 
 
		 
	 
	 
	 
	 
	 
	 
	


 
 
		 
 
		 
			 
 
		