Leon Camier saw track time reduced by teething troubles during his Crescent Suzuki debut, in testing at Portimao.
The former factory Aprilia rider planned to work on chassis set-up, the new Yoshimura engine and Motec ECU firmware during the three-day test.
However his track time was restricted due to front brake and then electronic problems.
"It was a pretty frustrating start to the test, particularly on Leon's side,” said team manager Jack Valentine. “The first day was hampered with a braking issue, and the second saw us struggling with the bike's firmware.
“However, once we reverted back to our old settings on Leon's bike he was able to get going properly. He posted some quick times on the race tyres on day three, after which some mechanical issues put us back again.
"He then went on to post a 1min 43.7sec with the new firmware, which puts him a second off the fastest lap set by Eugene Laverty [also on race tyres], but is very close to the rest of the field running in the mid 1min 43ecs.
“Leon's done a great job considering he was only able to do 120 laps across the three days and I'm convinced we are going to improve from here on.”
Former BSB champion Camier stated: "Unfortunately we had a few issues throughout the test, which can easily happen with new parts and systems, but I must say I really like the initial feel of the bike…
“There is still a lot to try out with the chassis to find the exactly right set-up for me. But at least we now know what needs to be done and we can head in the right direction at the next test, where I hope to get a lot more time out on track to find my ideal setting and post some faster lap times."
Recently-crowned British Supersport Champion Alastair Seeley, standing in as test rider for John Hopkins as the Californian recovers from hand surgery, was able to work through a range of electronic development strategies.
On his first visit to the circuit and first ride on the Crescent GSX-R1000, Seeley posted a 1min 43.5sec with a soft tyre on the final day of testing and a 1min 44.1sec on race tyres.