If you got the technique then in my opinion it is just a matter of 'doing it' at high speed (but a flat road). For example, this year I did one real road race at a local club (after 10 years no racing). I was just passing by during training when the girls doing the ride almost pulled me onto the course to join in (they only had 10 competing so every girl was one extra). When the pack hit the first corner I almost wet my pants because we were going so fast and I really pulled the brakes way to hard. Still I knew I could do better and the next corner I eased up on the brakes and I made it through without running of the course The bike just stuck to the tarmac though my belly did some flip-flops. Gradually through the course I got some confidence back but still fear hit when we came up a curve at a really high speed. But that's more of another problem, one of the reasons I stopped al those years ago is that I hit the tarmac really hard a couple of times in 1 season and I really grew (and still have) a fear for going to fast into the corner (I still carry the scars to prove that).

What I am trying to say, you can't expect that fast downhill turns are just a matter of technique (sure that's where it all starts). Part of it is also between the ears, the more confident you are that the bike will stick to the tarmac, the more you will lean into the curve with your body and the more you will grow into it. It takes time and a lot of trying before you grow into it.

On a side note, when doing tonights training I tried to see how I go into the curve (which technique do I use). And I came to the conclusion that indeed it must have something to do with weight distribution. I think 'go left' and my body shifts (upperbody leans over to the left) and the bike goes that way. And allways look where you are going, look for the point where you want to end, that 'automatically' balances out the weight distribution.