Having scored points at Assen, Broc Parkes struggled at the Sachsenring with a big crash on Saturday forcing him to run his spare bike for the remainder of the weekend and struggling to deal with handling problems with the bike.

The rear of his PBM was pumping under acceleration and the front chattering through corners, providing the Australian with an exceptionally difficult combination for the race.

"I'm struggling a lot on the number two bike, we confirmed in Barcelona at the Monday test that this bike was chattering and moving," said Parkes. "That race was probably my strongest of the year even when we changed suspension from my good bike no matter what we did it was so far away.

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"When I crashed my good bike [in Germany] I knew that it wouldn't be easy on this bike. When I had to try and do the times in the race it felt really bad," added Parkes, who finished the race in 21st place.

A problem with the electronics compounded his difficulties, a transponder failure not allowing the bike to adjust the electronic settings - such as throttle responsiveness and traction control - from corner to corner.

"Unfortunately I had a problem with the electronic transponder and sector by sector the bike got confused by its location," he explained, highlighting a problem suffered by Ducati's Cal Crutchlow earlier this year.

"It meant that the bike was all over the place and inconsistent which meant that the bike didn't know where it was on the track and everything was put out of synch. I couldn't get a rhythm and there was a lot of times in the race when the bike would lock the rear in strange places and I couldn't understand why it was happening.

"The whole race we were all over the place so it was a bit of a disaster."

While Parkes had a nightmarish grand prix weekend he is now turning his attention towards the Suzuka 8 Hours at the end of the month where he will be riding for the Factory Yamaha squad.

"I'm going to Suzuka for the 8 Hours and I tested there last week and was really fast in every session so it was a shock to come here and feel so bad on the bike. We're aiming to win, but I think with the Yamaha it's difficult because we probably need to make an extra fuel stop but we've three good riders and we all have good pace but it's an endurance race and anything can happen but if we can get a podium it would be unreal and if we could win it would be a massive bonus.

"Honda are always strong there, they always want to win it. Suzuki are strong and Yoshimura have two teams as well as the Kagayama team. There are probably seven or ten teams that can win but the main contenders will be the Johnny Rea team and then the bike with Leon Haslam and Michael van der Mark."