IRS design problem

[Ant]

I have just discovered a design problem with the mounting of the T/Bird spindles on the end of the bottom arms, which have 5/8" spherical rod end joints, one on the outside of each end of the spindle, then a bolt with a small sleeve going through the joint and down to a smaller size for the sleeve in the standard Ford rubbers. Then the perceived problem starts the bolt just has a nut on the inner end against the inner metal sleeve, so the other side of the rubber bush is unsupported, I can put a ring spanner on it and lever it and movement occurs (I would wonder what it would be like under heavy load!)
The rod ends are for adjustment of camber/toe in toe out, as the rest of the suspension is urethane bushed, and the top arm has no adjustment available!
I can only see one option that might be feasible, which is to run a long high tensile bolt all the way through the two rod ends and spindle, to try and stop the individual shortish bolts wandering in the rubbers, and for good measure make a nice fit sleeve to go in the middle and bolt solid? Then fit a urethane bush kit to reduce movement further bearing in mind this car is mainly for the road. I see some cars have four lugs welded on the arm so the rubber joint
is supported both sides, maybe I am being to critical until I test the car, but I have huge reservations on this design - help.
Any suggestions gratefully appreciated - Ant