If they are just a bit too high I'd sand them down. I've also bent them, for myself. The easiest way is to rest the gun on a table, with a couple of shot bags on the barrels and the receiver back over the edge. Make sure all the screws are tight, wrap a sock wet with cooking oil around the wrist and put a heat lamp on each side close to the wrist. Put another bag or two of shot on the butt end of the stock. Measure to the floor and check it every 15 minutes or so. You're not forcing anything so this way it's pretty safe. If it wants to bend, it will. Maybe put something on the floor to catch any oil dripping down. It may take a hour or two. I do it in my reloading room as I reload. Good luck - Paul