Humm, that's rather unique Fergler.
I also use SWS actions but do it a little differently. I've got insert markers set up with a hotkey, "M", and while
I play the song, I simply insert a marker at the front of every first beat as I listen to the track(s).
Then when I'm done I go through and visually line up each marker with what appears to be the start of each beat. There's
usually a visual indication where the beat starts.
Then when I'm all done I use an action called "SWS/BR: Convert project markers to tempo markers...". This works very
well for me, although it can take a little practice to get things perfect.
One little tip, I do try to get an idea of the timing of the song and set the BPM so that it's approximately close.
Then I move all the item(s) so that the start of the song ends up on the 3rd measure, which gives me a 2 bar count-in.
I should mention, I've got an external SPMTE sync box that I can tap to get the approximate timing. I've also got a
spreadsheet setup so I can put in the time between bars and it gives me the BPM.