Fernando Alonso flags danger if rain hits Dutch GP. Aston Martin's upgrades set stage for competition at Zandvoort.
Aston Martin strives to regain early-season strength with upgrades. Alonso's P5 result linked to improved performance.
Alonso praises data-confirming upgrades' effectiveness. Traction and grip focus helps car's performance, raising optimism.
Alonso credits factory's dedication for progress. Confident upgrades and data-backed improvements pave way for bright future.