It too sure sounds as the throttle position sensor is sensing and creating an over rich condition with cold startups. Makes me think of the old hand choke or even like my snow blower...... When they run rough more air is required on colder temp. starts. Must be seeing black exhaust smoke also. Could be something as simple as a mouse nest in air box.

LMAO roger on the date Hanky, never noticed. Thanks for seeing that, would of probably kept going here.