What do you mean, John ? yes!! you are right. Most of the existing hangers are really terrible and some can not be used. What should we do next, leaving this job or keeping on? I really wonder that the caesarII program is merely suitable for the new design because in many (unknown)parameters of existing hangers would make the analysis output incorrect....
But I sometimes have to carry on this kind of job by using the existing data (as Richard said)and frankly, i'm not certain about the result at all...
So what about your suggestion???

Regards,