#3, more barrel clearance. This can be hard to accomplish if you have a plastic tip on the stock. The tip on a Rem CDL is hollow, so you can only take so much off!
I like a lot of clearance with wooden stock tips, especially those with tapered fore ends. Those have a lot of flex. If you can't get the clearance you want by sanding the channel, try a skim bed on top of what is already bedded and lift the barrel with tape to give the extra clearance while the epoxy sets up.
You can always go with the speed bump (#2) later. #1 (tape) is a temporary solution that might end up failing at the worst time.
