Ill make an observation here as well, Alot of us have jobs and other events to attend to before considering the drag strip every weekend, its always going to be like that unless we have endless cash to throw to r+d to beat this and that time before hand, most usually get there times then hunt around in observations and there own time r+d to improve on them, A time is similar to a dyno figure its only a figure which you can base and build on hence the reason why we dont dyno run every week to squeeze that extra 1 or 3 rwkws/awkws out of it.
The money factor is a big thing as well, this including travelling too and from these events, not only that most of us use our skylines as daily's we cannot afford the chance of increassing the likely hood our cars are off the road.
Yes it may seem like a shame, but you must take all aspects into account on this one noel sorry!
cheers
A