Instead of pointing at variance, look for some flaws in your play. -315 in 1348 hands is less than 0.5 BB/100 hands. 
 
Tolerances in limit are very narrow. One preflop mistake made semi-regularly can lead to between one and two compounding errors per session. That can be the difference between plus or minus a portion of a big bet per 100. 
 
Post some hands.
		 
		
		
		
		
		
		
			
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				"Animals die, friends die, and I shall die. But the one thing that will never die is the reputation I leave behind." 
 
Old Norse adage
			 
		
		
		
		
		
			
			
			
			
			
			
			
			
			
			
				
			
			
			
		 
	
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