I bought a second hand BAT SV action and i have a question if someone could help. On the trigger hanger there are the numbers 10 on one end of the hanger and a 20 on the other end of the hanger. I have a shilen 2oz trigger i am trying to use and it doesnt seem to want to work. I didnt know if these bat actions were Jewell only or if the numbers have anything to do with anything? This is my first ever BAT action and it is a bit different than anything else i have or have seen. I can take a pic if that would help. Anyone have any knowledge you could pass along? Thanks fellas! Lee