Repairing an early 70's Dual 1229 - Help?

I'm in the process of trying to refurbish an old Dual 1229. When I was re-installing the head-shell with a new cartridge, the tone-arm contact plate became dislodged and I cannot figure out how to re-attach it. The wiring appears to be intact. Does anyone know how to re-install the contact plate?
I hope that someone can help you. I had a 1229Q in the 70's, and it was considered a really nice turntable at that time.
I’ve rebuilt several, including the one I use daily with a Grace 747 tonearm.
If you PM me I’ll walk you through it..