Have you ever watched your AFR while power braking? I have a very tight convertor behind my motor, and my motor will go dead lean (17.x) when trying to bring the RPMs up against the converter. If I bring up the IFRs (.035) I can reduce the affect and at some RPM point the mains start and the AFR drops back down. My cruise is ugly rich, so I don't want to raise the IFRs, and am also reluctant to drop the HSABs (current .035). In general my QFT carb is possessed, and is off the motor again, but I am wondering if you have any experience under these sort of conditions, particularly with the large HSABs in place.
