Don't know if you had the same problem as me but here goes. My tube's weld was
broken where the rear of the tube entered the body or, right where the front end
of the Bowden tube fitted onto it. I figured if I could stop the Bowden tube from pushing into the body, taking the end of the tube in with it, all would be good. So, I made this little "Bowden tube front end restraint", for lack of a better name for it. The tubular part of this restraint device works as the "male" receiver of the "female" front end of the Bowden tube. The flat bar welded to it prevents the Bowden tube coming forward into the body when you push down on the clutch pedal. It took a minor amount of adjustment at the rear end of the cable but it has worked fine for me for about the last 20,000 miles.
By the way, it was four years ago this week that we bought our Speedster in Boise, Idaho and drove it home from there. We've put on 45,043 miles since then.
Here's the pic.