Let me start off by saying the trans was just rebuilt. Due to a bad torque converter the lockup clutch failed.so I decided to have the trans rebuilt while I had it out . Now when the trans is in the park gear is popping or clicking as the truck moves forward while in park.When you try to put it in first manually you have to hold it. it makes a grinding noise. I had no issues with the linkage before all this and it doesn’t seem to be sprung or anything. Any help is appreciated. Thanks also when its in drive the trans shifts like it is supposed to.