Are their any top end tuning kit for a hw99 i have a tinbum kit in it at the moment better than standard but still a lot of vibration its in .22 cal and running at 11.6ft\lbs but think it would run better at slightly low power what works for yous i know to a lot of people spending a lot on tuning a cheap gun is a waste of time but I seem to pick it up over my over tx200 and hw80 every time mad i know