I have the loop model free flight and didn't like the smoothness of the
trigger so I just punched the roll pin out that the trigger pivoted on and pulled out the trigger and tension spring and notied the sear area had casting marks and was'nt smooth. I took a small straight edge wrapped it
with 80 grit paper and went to work until it was all smooth then went to 240 grit to put a finish on it . Did this to both mating surfaces and reassembled. It is now much smoother