First; how does it shoot? If acceptable accuracy then don't worry about it.
If the stock is touching on one side, remove it and take some material from the barrel channel where needed. Seal the wood after.
Frequently I've found a (thin) barrel that's free floated will shoot better with some fore-end pressure. Check this by placing some shim under fore-end tip (match book cover/"credit" card) and shoot for group. If the rifle shoots better with fore-end pressure, build a clay "dam" and add devcon/epoxy to fore-end to provide barrel pressure at that point.
I would imagine the search function to have exhaustive tutorials on this.