Most of the complaints were about player compensation for the lower-ranked players, and for increased prize money for the earlier rounds of Grand Slams, both of which have been addressed and improved at this year's Australian Open.
Sandstorm and its sister machine, the Hummer H1ighlander are among the 40 vehicles taking part in qualifying rounds for the Grand Challenge between 26 September and 6 October.
The second seed has been in stuttering form in the early rounds, but extended her grand slam winning streak to 28 with a 6-1 6-2 victory over the Canadian in their fourth round match.
He will ride a 500 Patten in the Senior Classic Manx Grand Prix and a 350 Honda in the Junior Manx Grand Prix and has been offered Superstock bikes for the final few rounds of the British championship.