Craft implants to 430/435, adrenals to 440 then new implants to 450. You're reading the color showing how it compares to your character level.
I was just about to post that.
Basically Steave is 100% right, I used stim 410-420, then implant 420-435 then adrenal 435-440 and am currently crafting new implants.
It's not the game that's the problem, it's the items you're crafting.