I lost count how many times a smaller bike with a good rider out ran me in those mountain passes. It is all about skills and not about the bike.
Most had been said .....
1/ learn skill first, be patient, learn speed later.
2/ slow down while you're upright before leaning over.
3/ go in the turn on the outside of the curve so you get the maximum view down the road/curve for any stopped car, deer, dead body, etc.
4/ you should be done braking to reduce speed when you enter the turn, you'll learn to brake late into the turn as you get better.
5/ for now, you'll enter the turn coasting or VERY SMALL throttle.
6/ as you exit the turn, the last 1/2 to 1/3 of the turn, start to increase the throttle. Don't whack it open.
7/ important: keep some drag on the rear brake peddle through out the turn. This allows a larger throttle without increasing road speed. Larger throttle is easier to control than small throttle.
8/ my track racing friend tells me lots of street guys, once they find out he is a track guy, always have something to prove to him. They tend to ride to 90+ percent of their potential and the road condition and leave nothing in margin. Encounter a piece of road junk and they don't know how to tap that last 10% ... crash.
9/ look at where you WILL BE GOING, not where you currently are.
10/ DO not look at the road right in front of you. Do not look at the ditch. Do not look at the road junk. Where you look is where your tire WILL roll to.
I found myself improved in normal turns and series of "S" turns after I practiced making tight U turns and figure 8's. On a parking lot, press down on the rear brakes allows you to keep the throttle open wider for better control. LOOK at where you WILL be in 2 seconds later. SO, on a U turn, your neck is turned to look 180* from where your bike is pointing.