I don't lock onto the bike with both knees, just the outside one. I found on switching to a sportish bike from a sport tourer that I need to concentrate on getting my weight to the inside before the corner. The old push my chin through the corner stuff. Also do a bit of gymn to strengthen my abs and lower back. (and legs)
just add, I noticed that the sport tourer had a narrower rear tyre and tip in was easier. sporty bikes have a wider rear and you need to go a bit harder to tip them in. in compensation you're on the gas more safely on exit