Well from the pictures at least the fit looks more or less good although a bit loose.  Its possible there's a bit of crud down in the bottom of the batang that's keeping it from setting down quite perfectly.  Might be worth a little bit of digging if you have the right tools for the job.  could also just be shrinkage/warping.  Again if you have a tool that will serve you might be able to get it to set down just a bit more nicely... 
 
The blade is clearly late-ish and not quite as refined as they were in the heyday of the mid-late 19th c but its consistent with N.E. Peninsular work of the period.
		 
		
		
		
		
		
		
		
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