The "fix" for loose tubes is getting them staked RIGHT.
The grips are just a hopeful "belt and suspenders" insurance.
The right way is to use a 1/8" carbide Dremel ball cutter to grind a countersink inside the frame over the tube holes.
This gives the tube rivets room to flow DOWN into the countersunk holes.
When the excess rivet is ground off, there's still plenty of rivet left to hold it.
Done this way, WITH a shot of Loctite Red on degreased tubes and frames and the tube will be on there for the life of the gun.
The tubes that come loose are the ones done by people who either don't know to put the countersinks in, or are in too big a hurry to bother.