[tpiini]

Hey Nick,

If they are opening about 1/4 of the way, that's likely all the engine is asking for. When you have a vacuum secondary carb, the only way that the secondaries will EVER open up all the way is when you've sized the carb too small for the application.

I'd continue to play with springs, squirters, and your stopwatch and let the engine dictate what it really wants from that carb. But it sounds like it is working properly.

Tom