Some of the original choke springs had the ability to adjust, the one came with my MP reissue six-pack hardware is not adjustable. Besides, backing off on the initial spring tension just leans out the choke or de-tunes it. There are plenty of these cars running around with their chokes de-tuned or disabled. Fact is, blocked crossovers or not, a properly street tuned six-pack set-up will be quite cold blooded without a fully functional choke. Some parts of the country worse than others no doubt. A lot of people seem to just accept poor cold drivability, that’s fine by me, I choose not to. Not preaching here, someone inquired about my choke mod, I provided the info.