Shaun could you post pic of your mount setup? What did you need to file? Did you notice change in trigger? I love the cloned T05 trigger better than the rekord so far but I have not shot my B26-2 enough yet to be sure.
run the rifle in for about 200 shots then inspect bore at the breech end, there may be a build up of burnt lubes used to reassemble..normal for these, clean if there is a build up with a brush and WD-40 followed by some dry patches...