I’ve had my kraton since December and it’s been superb , just started to notice it was starting to get a little screechy under acceleration and was wheeling less and less so I’ve given it a little tighten and it wheelies again off the throttle , when does the slipper pads need replacing ?and when it’s done do I need the service kit or do I only need that if anything is faulty . Lastly if set correct should it wheelie from a stand still or once it’s free wheeling off throttle