Didn't see how low you tried gearing. On my Fantom v2, anything above 69/29 I was not clearing long jumps. Have you tried gearing DOWN to 69/28 or 29? May wake the motor up. Looks like you already have good rpm and could gear down for torque. Also don't know if that's a short stack but would think 30 would be max if it was
Now that I bumped up the timing I going to start with a 69/30 and see what my temp will do. It's a tight carpet track with a lot of big jumps that need to be cleared.