VW1302 rear axle operation

I applied serious operation on rear axle of VW 1302 Super Beetle yesterday. They were IRS control arm bushes those had not been replaced from the beginning 42 years ago. Though the replacement rubber main parts, 4 pieces of bushes had been prepared two years ago, they were left undone because a very important information about the procedure could not be obtained, how much angular action would happen when the trailing arm movement stopper might be released. Also, the owner of VW shop in Takarazuka Hyogo Pref. was not so friendly as to tell me the data about that because of his selfish dealing strategy, it goes without writing here that I stopped to drop on him after that. On the other hand, YouTube movie information about the action of the torsion bar spring construction after releasing gave me an enough confidence to proceed to an experienced dis assembling procedure. Recording the original angular position of the torsion springs is the key to success, but for that, it would take time to find out some balanced adequate positions of them. And newly applied rubber parts prevented me from tightening the cover plate, the countermeasure to put new bushes on an adequate positions was preparing some longer stud bolts and nuts. Now, all the inexplicable part on VW1302 Super Beetle has eliminated thoroughly.