Former series leader Billy Mackenzie had a trying weekend at Appin on Sunday.

Scotsman Billy Mackenzie is hoping that the Appin round of the MX Nationals series will be his worst round of 2011 following a frustrating eighth position overall on Sunday.

Monster Energy Kawasaki’s Mackenzie scored 8-10-5-13 results in Sydney and lost his series lead to teammate Dean Ferris, and he wasn’t 100 percent certain what went wrong over the weekend after a spate of crashes.

“I’ve had such a weird day. I’ve been riding really well, I felt really comfortable on the bike, my fitness has been great and I was strong til the end of every moto, but I was just on the ground more times than I really would have liked to have been,” Mackenzie admitted.

“There’s not really any reason for it, I was just getting caught out. The track was really tricky today. They say you make your own luck but I don’t know, something was going wrong today.

“I’d like to think that this will be my only bad round of the series. I’ll make sure I work hard so I don’t have another one like this. At least Kawasaki are [now] 1-2 in the championship.”

Heading into round three of the 2011 series at Raymond Terrace this weekend, Mackenzie sits two points behind Ferris in the title chase.

To check out one of Mackenzie’s crashes while leading the Pro Open pack, check out MotoOnline.com.au’s Post Race Show at the 48-second mark by clicking here.