I have the day off today and so am doing some fuel testing, I think it may still be best just to keep fuel at 100% and over 10 laps some cars may make it others wont. If the race was 9 laps then I think all cars will make the distance and 11 laps nobody would and so all would be forced to stop. My thought is an enduro is better run in one stint or longer distances rather then forcing stops and then splitting the race more into 2 sprint races. Running a full tank on one set of tyres will require a different approach but is likely quicker then splitting it into 2 but this could give the option for softer tyres and possibly make up for the time lost in the pits over the race distance.
Consider a race lap of 8:30 this would give a 9 lap race around 1hr 15m 10 laps 1hr 23m and an 11 lap race 1hr 31m so if people want forced pitstops I think better to just run an 11 lap race or if they want the option to do the race in 1 go managing tyres then stick to a 9 lap race but still give those that want the option to split the race and see if they can make that work.
There is also still an issue with track checksums on nords servers and so please all play fair here
but it may be best to make ptracker compulsary. This will allow me to still ensure all have Valid track conditions and the race results screen will also have more detailed info for all drivers.