lovely looking bike - good luck with it.
personally i can't stand datatool alarms - put it in service mode for cleaning or any other task and it keeps chirping, so anybody walking past (the garage?) knows there's a bike in there worth alarming but that it's disabled. great logic - i bet it took ages to come up with that!
i suggest stripping out the datatool and ebaying it. if you must have an alarm (my insurance mostly sees one as a pre-requisite) then i suggest the meta m357v2 (from memory) as it doesn't drain betteries as suggested earlier (in my experience) but more crucially the activator button can be added to the ignition key as one unit meaning that there's no fob bouncing around while riding being distracting and scratching the top yoke...
that exhaust can wouldn't stay long on there if it were mine either...
oops - just re-read your post and saw that it's a datatag!
is it clean enough?