Hi Mark Morgan, thanks for reading. I will be straight forward with you and say that I personally am not a fan of shimming rests. Of course I would prefer to check out your exact set up before I give you any advice on that aspect, as I know several guys that have shimmed their rests and even sights and it improved their accuracy immensely. I just feel that in this day and age the technology is there and there is a perfect set up for everyone. The NAP is a good rest and I know what you mean when trying to save a little extra money. I live in AZ and so the archery hunting I do is the western style spot and stock. My second rest that I ever bought was the Whisker Biscuit (I had been using a Trophy Taker) and for having an arrow nocked and not having to worry about any movement, it was perfect. It held the arrow in place without any worries. However, I did notice a change in distance, so I had to adjust all of my pins for that specific style of rest. But I was sick of my arrow bouncing around my old Trophy Taker, so it was worth the switch. You can pick up a Whisker Biscuit style rest anywhere from $6.00 all the way up to $40.00.

I hope this helped.

Chris