Safety going on after firing ?

[CRJR]

I have a Ultralite 28 Nosler that has a Timney trigger on it and when I fire it the safety go's on safe . The little roller spring is installed and the tension screw seems right to me .
What am I missing ?
Yes a did the conversion myself .

[Dave Hoback]

Did you adjust the safety at all upon trigger replacement? If not, I would readjust the safety tightly so it offers a pleasing snap ​into position.