Marko has stressed that Red Bull must take full advantage of their current dominance as things could get more difficult as the season progresses.
"We have restrictions in wind tunnel time," Marko said in an interview with RTL/ntv and sport.de.
"In the middle of the season or in the second third, it could happen that the competition catches up with us if they work well. Therefore, our goal is to score as many points as possible in this phase.
"We have improved a very good car and when I look at the competition, they went backwards. But we are not cocky."
Red Bull are currently 122 points clear at the top of the standings and will be heavy favourites to extend their advantage in Imola after winning there in each of the last two seasons.
GPFans is a multi-platform, multi-language brand dedicated to Formula One coverage. We bring you all the ins and outs of the sport, 24/7, everything from up-to-the-minute news and features to the latest viral stories and clips.
We believe that a new generation of exciting, outspoken drivers will make F1 more popular than ever before, and we want to give our users access to as much of their heroes as possible, on and off the track. From Lewis Hamilton to Max Verstappen, Daniel Ricciardo to Sebastian Vettel, we provide in-depth analysis of every every Grand Prix in the season, from Australia to Abu Dhabi.
With Formula One under the new ownership of Liberty Media, how the sport is being covered is evolving, and GPFans will look to be at the heart of this progression into new media, as one of the fastest-growing sites covering the king of motorsports.