Reply To: Struggling under load

[Don]

Well, I’m not too concerned about the cam pick up point, your issue is at high speed. The “economizer rod/linkage” is what I’m wondering about, this is the horizontal rod that runs from the mag plate up to the carb linkage. This linkage allows full timing advance to be achieved before the carb butterfly is opened fully. It can be a little tricky to set this correctly, you almost need two people to do it…
If not set properly, the carb butterfly might not open fully at WOT…Or, if the adjustment is somehow “preloaded”, this might prevent the mag plate from advancing fully… Sorry, I don’t have the manual pages to post, but I’m sure someone will do that for you.