Sticker,
<img border="0" alt="[nono]" title="" src="graemlins/nono.gif" /> DO NOT TRY TO BEND the trigger lever, IT WILL BREAK! <img border="0" alt="[nono]" title="" src="graemlins/nono.gif" />
If you will look closely at the top rear edge of the trigger lever, you will see a slight bevel on it. That is to aid the sear bar pin in slipping under it when the trigger is released. Polishing this bevel to make it smoother will often correct the problem that you are having. Another remedy is to stone a slight bevel on the outside corner of the sear bar pin to help it slip under the trigger lever.