thanks Dave!

I am now even more puzzled! if I look at the participation factor of the relevant mode it is about 0.23 and when I multiply it to that DLF of 1.2, it gives me a factor of 0.276. considering that the peak force is 65000 N the maximum contribution of 4th mode should be about 0.276x65000= 17940 N. the results in the restraint summary of CII contradicts this value massively. please have a look at the attachments.

regards,