G'day AA - (even though you're from the "Eastern Island"
Sorry can't help on that route. Like everyone else the ATCO's at LTN have manic times - would it be worth posting something in the ATC forum about the routeing and perhaps a "sensible" time of day to get through. Up here there are good times and others when a little local knowledge would suggest you don't bother calling.
Sorry can't help further.
P.S. What was that I read a few weeks back about "pushing your envelope further...........
