As I've stated in my build thread, after fitting the original donor (86 BJ70) wiper assembly and put the wiper motor back in, it all works. Looking at mounting points and such and searching part numbers, I have decided that the wiper assemblies are different for the fold down windshield and the non-fold down windshield. So, the new wiper assembly is probably correct, I just have to move over the wiper mount, drivers side, to the left about 3". Was looking at the position of the drivers side wiper arm and it looks like the position it is in now the wiper arm will hit the fold down hinge of the fold down windshield, therefore the shorter arm and needing to move the mounting holes to the right about 3".