[Mikemuir]

Swapped out springs to brown
You are the Holley guru!!
Running a lot better
Still a bit of a stumble and backfire under harder acceleration
Stumble and backfire through carb seems to happen when secondaries are starting to open(I can see them through the hole in the bonnet)
The transition under light throttle is now a bit smoother but still feel the secondaries kick in.
Should I swap out the spring to black or work on the accelerator shot(cams and squirter)
You have made my day and really really appreciate your advice.

Cheers