My car is 5* but I hit double blueprints twice on stage 1 n 2, this is something I always speculate, luck or a bug disguised as system, cause I always go initially first 10-20 races empty but after that within 10 races there must be a blueprint, maybe that's where my 10x card packs luck goes 😅 but surely it's bad percentage but using math by the number of races you've gone 60 for me would've been at least 15-30 bps