1996 M900 Rear Set Linkage Rod Adjustment

[schau28]

Hi all, long story short I laid the bike down a couple weeks ago when I hit some gravel going about 5 mph. Ordered the same ducabike rear set since the ducabike sets that were on there got bent pretty bad. Everything installed fine however, now I can't seem to shift above 2nd gear. I'm pretty sure it has something to do with adjusting the linkage rod however, I've just about ripped my hair out for a couple hours going back and forth making adjustments.

If anyone here has any experience or have any advice it would be greatly appreciated. Thanks!