Cox was back on the pace with the delayed third qualifying run, which took place on Sunday morning, with a time of 57.42s.
"The car was really good and it felt good to finally be in that time bracket. I knew there was more time in the car. We elected to use the same tyres for the fourth qualifying run, where we set a 56.02s and we knew what we could do to improve.
"Then came the top 32 shoot-out, and our day just turned around for us. From the start line our hydraulic centre diff pump blew, so no 4WD, mostly front-wheel-drive. Close on a corner, the car hit a couple of ruts. It was a good line but, not having 4WD, I couldn't stop the car turning around. Then it stalled before I could turn it around and keep going.
"In the end I couldn't make up the time and therefore didn't make it into the top 16, which was disappointing. So, a frustrating weekend. Congratulations to Alister on his win, but I have to say it's nice to still have the course record."
Depending on his 2019 plans, Cox was already keen to enter Ashley Forest again next year.
"I want to keep trying to lower that record — we know there's a lot more in the car, but it comes down to weather and road conditions too."
He was considering the idea of entering two cars next year.
"Maybe a front-wheel-drive might be on the cards. We could enter two classes, get more seat time on the hill, and knowing more about FWD now it would be cool to go for the 2WD record as well."
His next event is the final RX Academy round on October 7 at Tierps in Sweden, which will mark the last event of his debut season of international competition.