camper clips???

Hi! I am new to this site(to be honest this is my first site to ever have a subscription to) I have a 1990 xlt ford bronco 5.8 ltr. I took my top off a couple weeks ago and I am now putting it back on. I broke a screw off in one of the rear stationary threaded clips. Is a way to take it out and purchase a new one to replace it? Also, if so, where can I buy them and how can I replace them? I would like to buy the removable clips for the sides too to replace them just for the heck of it . Where could I get those? Thank you in advance for your help!

Rich