9912S bit lumpy when cold?

[240Cup]

I religiously warm my car up (oil) temp before extending it but the warmer it gets the smoother the bottom end - around town when cold I find it a bit lumpy.

Is this a case of TADT sir or is there something amiss?

[240Cup]

If no one recongnises this problem that suggests they don't all do that sir..!!

[240Cup]

Bit stuttery until it warms up, little bit jerky .... not hugely so but markedly different to how she drives when warm.

Are these known for coil pack issues or am I imagining that/does it relate to earlier models?