I have a Taipan Veteran 22 short and sometimes it doesn't cock on first try have to let lever up a short distance and try again? Is there an adjustment or something to fix??
Saved this picture for just such an occasion.REMOVE the cover over the trigger mechanics ... TAKE A LOOK INSIDE on what is moving and making contact etc.
You will find /see the linkage controling the intermediate link that lifts the sear into battery.
Once you see it all, you will grasp all the adjustments it offers.