Will Tregurtha and team-mate Stuart Middleton let slip their GT4 European Series lead after a challenging weekend in Hungary.
The pair watched their 18 point advantage evaporate at the Hungaroring, and will need to rediscover their form at the series finale in two weeks time at the Nurburgring in Germany.
Rounds nine and 10 of the season at the Hungaroring proved to be the most frustrating races of the year for the HHC Motorsport pairing, despite excellent pace in qualifying on their maiden visit to the track.
Contact in the opening encounter resulted in their first non-finish of 2018 and wet weather in the second contest limited the points scoring potential of the duo.
Speaking afterwards, Tregurtha said: “We knew it could be tricky this weekend with the weather as it was, unfortunately things just didn’t go to plan.
“In race one a BMW gave us a whack when we were battling side-by-side, which broke the rear suspension, so our race was over early.
“In race two it was tough going but when we swapped to slicks at the pit stop, we were fast when the track dried. I think we’re only a couple of points behind in the championship, so it could have been worse, and now we’re excited for the final round.”