You have a UK tub correct? If so, you may need to install a rivnut into the capping for it to fit correctly. The set up is very similar to a series rover. You probably have a hole in the capping to bolt the foot of the upright too? If you don't get a picture, I can always run down to Badgers place and take a few shots of his jig for you. Chris is a good friend and his shop is about 5 min from my house. Just let me know.
1969 Ser IIA 300 Tdi hybrid
2002 Ford F250 Crew cab 7.3 diesel
2003 VW Jetta wagon 1.9 Tdi 5 speed
1992 Range Rover Classic ( my son's)
"Be the person your dog thinks you are"