One thing to be aware of on the 541T is not all of them have a 3 screw fully adjustable trigger, be sure to check for that. I also seem to remember that not all of them had two action screws but I am not sure of that but if you take a look at the trigger the number of action screws will be evident anyway.
drover
Heavy barrel has 2 screws, sporter barrel one screw like the 581
