kickdown linkage

I'm new to this: the kickdown linkage has something to do with the regular upshifting of the trans. I posted elsewhere, but the PO put a Holley 4bbl on my '68 318, and it shifts up hard unless it's under moderate throttle, and won't shift to 3rd until it hits 30mph, again hard unless under moderate throttle.

thanks

Peter

Peter you probably just need to adjust the kickdown linkage at the carb. Shorten it up to make it shift sooner.