Line lock installation

If it holds that is good. There may be something going on with a different factory distribution blocks.

I hear you on the fancy foot work. I too have had 4spd cars that did not like to idle. Looked like a paddle boat operator! haaaa

It could be just a difference in tire rubber composition also, as I notice the rubber on my tires seems a little hard.
They don't squeel or anything on dry surfaces, and when driving on wet pavement it spins super easy.
With stickier tires it could very well push through.