To use that particular stock with your particular barreled action and trigger group, you'll have to either remove some material from the top of stock where the receiver sits, or remove some material from the bottom where the trigger group sits....or there may be a different (or additional) problem inside the stock relative to the receiver-legs fitting into it, and/or up by the barrel channel which needs addressed.
Without having it my hands, I can't tell you where to start or how much to remove.
Careful measuring and common sense are the keys here.
You'll need the appropriate caliper.
Start by ascertaining the measurements of a stock which you already know fits.
Go slow.
Measure twice, file once.
Re-check the fit often....but DO NOT keep trying to force the trigger group into place. If you do, you'll surely "spring" the trigger guard and/or damage it's pivot/hook.
Hope this helped somewhat.
DGW