I noticed that I had a little play on the lower part of my TR4 steering column (lower metal adaptor from the flexible coupling to the Rack splines). I try to tighten the clamp bolt but is does not help. I was thinking to replace the bolt (grade 8?) and try again to tighten. It seems that new adaptor replacements are no longer available if I wanted to try to replace the adapter (splines on the rack look ok). The other possibility I wanted to explore was using the TR250/TR6 lower Universal joint as a direct replacement for the entire lower coupling?? Has anyone done this on a TR4 / TR4A ? Thanks