Originally Posted by TJ-Newbie
Eat less spinach.
Seriously, if you are that concerned about it you have three options,
One, holesaw in the side of the rail big enough to get a nut and wrench in this could weaken the frame a good bit you would want a patch on it......
Two, drill a hole through the frame rail top and install a crush sleeve, this would require drilling a hole in the tub to drop a bolt in or removing the tub, or cut the bolt exact and instll it nut on the top rail
Three, use a 1/2" thick bar to drill and tap for a nut that wont spin insid the frame rail,and good luck fighting it to the right spot......