I agree, bad fit. I think you are due a refund. In the mean time check out some alternatives:
http://www.rem870.com/2009/09/30/ove...hoate-tacstar/
http://www.zahal.org/products/remington-870-pistol-grip (free shipping)
Or, since you have a wood stock set consider cutting it down. Wood is good!
Click thumbs: