It really does help with the bounce if you fill in the leading edge cusp. The problem is that with the cusp you have a undercambered center section that is very high lift. The tips are narrow, thin, and semi symetrical with big heavy tip tanks on them. This leads to the center section never wanting to stop flying and the tips stalling very early. You have to come in with a very narrow airspeed range to landing, in my experience it was about a 7-10 knott window. If you came in too fast it would touch down on the mains and that high lift center section + bounce would lead to a big bounce and trouble, if you came in a little too slow she would tip stall as those narrow tips with big tanks would stall (center section still wants to fly) and it would drop a tip and bounce. Either way the result was some nosegear repair. When you got the airspeed and attitude right thoug the landings were a beautiful thing. The P80, both full and model does not have the undercambered center section, plus it has smaller tip tanks. They land MUCH easier.
To fix the problems, fill in the cusp and use crow. Scott