tommyauck did a great blu ray & dvd set based on the 1990 VHS set - and he may well have his original 1990 VHS box set still.
It may be worth sending him a PM to see if he can help you?
tommyauck’s Blu Ray / DVD Version of 1990 VHS Box Set:-
http://originaltrilogy.com/topic/DVD-Version-of-1990-VHS-Box-Set/id/48408
and the superb http://www.swonvideo.com/ site may be of interest too… (and click on the VHS icon in the left side menu)