maybe
maybe take a look at some other triggers, that may give you some insight. You may need to go to a smith....
check to make sure you have ALL the parts needed first, you may have misplaced one, and that could be your problem. Most triggers are relatively 'logical'. take it slow and think about the physical nature of what the parts are doing and that may help. post some pics of where you are running into difficulty and I'll bet some knowledgable folks out there who own a win 1300 can pipe in with some advice.
-porrpk