Sorry if the topic seems a bit vague, it's the best way I was able to put it.
I had recently bought a load of Wii Points with money I got from Christmas, and I ended up picking up mk64 (I wouldn't have bought it if I had a n64 to play it on, I have the game but no n64.) With this I play with a GC controller.
The past 2 days I've been playing a little bit of each course, guessing what the strat is for each course, without really looking at WR videos to know what I need to do.
The whole purpose of this thread is 1 simple question. When you hold long drifts, why do you sometimes spin out or come to a complete stop? An example I can give you is the LR flap, where you shroom on the last corner in 1 huge drift, I stay in that drift but I either spin out or my drift stops.

Hopefully there is a simple answer for this. Sorry if this doesn't belong here.