Steve put the standard front panel vack on in an attempt to equalise front and back of the car. The XE drivers were having a real bad time that year with the Watts linkage rear end, and felt that the inadequate rear spoiler compounded the evil handling. Bob Morris claimed at the time that "you know it looks bad from the outside when the flaggies take a step back as you apporach a corner, but I arrived at one corner and the guy dropped his flag and ran!"
Dick felt that the problem wasn't helped by the way his rear tyres "crowned", running only on a 2" patch in the middle of the tyres, probably (IMHO) a result of running a wide bag on the narrower rims to which the Falcon was limited. He also didn't think that Masterton was on the right track by blunting the front end's handling to bring it into line with what the rear was doing, feeling that they would only finish up with a pig of a car, which was the case.
Dick spent the weekend wringing the necks of his engines to get the times, and rebuilding them at night, the car went sour during the race and burnt about 10 litres of oil, and broke a sway bar in John French's hands; the team using the Channel 7 telecast's footage to evaluate the problem and passing their findings on to Frenchy via two-way. The car came home fourth, 2 laps down, but was disqualified for cylindr head irregularities IIRC - not illegalities. A frustrating campaign, seemingly doomed from the moment the baton was passed to the new car - there had simply not been the timeavailable for reasonable development.
All the XE teams tackled the rear end individually, and ultimately DJR made it work. The Masterton and Moore cars seemed to have an incurable susceptibility to overheating, but it was really only the Greens-Tuf and Masterton cars which were any good.