I have a SP101. The gun was functioning prior to tinkering (imagine that) I took it apart to install a Wolf spring kit. I got it all put back together and it and the trigger would not pull back. I took it apart and followed the reinstallation steps as well as I could understand. It will cycle a few times then it wont then it will. I reinstalled everything without the pawl installed and it pulls fine. I am wondering if there is something simple to watch for or change. I am installing the trigger group with the transfer bar and the pawl straight up. When it does cycle its mighty smooth. I will be grateful for any help.