BLOFLY, I wouldn't be to stressed abour 65 or 70. What I read in your orginal post is - "I sometimes find myself feeling a bit up tight when pushing the bike when it is leaning over"
I have had Pilot Sport and now Pilot Power, a few guys I know that use Power Pilot love them. Just ask Mario and Dan has already posted it here - i had a set of diablo's... i would recomend the piolt power over the diablo for rear grip, can't comment as i am still on the diablo front
I think that maybe you have a lack of total confidence in the front end of your bike. I did, and changed from Pilot Sport to Pilot Power and now have alot more confidence in the front (at the time I changed from Sport to Power I also had my front wheel straightened).
Do a search, using the link at the top of the page on the right, on Pilot Power. There is a thread that has a very similar discussion.
What everway you go good luck, once you find more confidence in the front end your riding experience will be more enjoyable.