I just saw this quote from the video author on rennlist, it is a short checklist on optimizing a corner. It matches guidance given by others, but seems to be easy to follow (but hard to get just right
)
"Not worrying about your line initially, first make sure you are able to reach full throttle at the apex and are at the limit through the whole exit. Then make sure you are at the limit during the whole entry. If you get that far see if your steering is constantly tightening from entrance to apex. To get beyond that point you really need to start paying attention to the whole overall track movement and force direction stuff I'm always going on about."
The thread:
ASK THE COACH - Page 186 - Rennlist Discussion Forums