Some of the crosman and Benjamin rifles have simply horrendous triggers. the second stage is long enough to cover a football field. and its unpredictable on its release point.

I have a Crosman TR77NPS which is a lovely gun aside from its trigger. you can adjust the trigger until the end of days and it does very little
However i cam across this fix on youtube and it works a treat.

I used the 5 x 8mm bearing in my particular rifle. Some are 5x9

Highly recommended and costs virtually nothing