Jinma 284 gearbox/shifter assembly help!

Can anyone direct me to a diagram for the drive gearbox shifter assembly? Was on my Jinma today when suddenly my shifter turned into a wet noodle. I was out on the farm so I had my daughter tow my tractor back to the shop with our Ford F250.

I cracked open the gearbox and found that the end of the shift lever, past the round part, had broken off. I removed the shifting guide plate along with the spring and retaining washer. I tapped out the pin holding the lever in the cover. I welded the tip back on and used a grinder to smooth out the weld, can't even tell it broke. Now my problem is I forgot how it was all put together.

I have the shifting guide plate, the spring, and the spring retaining washer (and, of course, the shifting lever). Am I missing a part, maybe fell into the gearbox when I was removing the cover?

A diagram showing the assembly and how the spring and washer fit together under the guide plate would be mucho helpful.

Thank you in advance!