Guitar Hero: Metallica - “War Ensemble” X+ Drums 100% FC (1,217,527)

Yeah this happened like an hour after my tech FC.
I got four runs past the big fill in the middle, three of which were my last three runs of the song. The second last run I overhit right near the end, getting 100%. Very next run, I FC’d.
I somehow just wasn’t nervous on this run after my last run. Confidence was high - my double bass was on point and I knew how to hit the fills. Just had to put it together and I did.
Now, I know what you’re gonna say.
“Can’t wait for FSFC”
“You’ll get it in no time”
“Your double bass is set now”
Yeah yeah still a no from me.
I can maybe FC flames if my foot speed stays, there’s just a couple fills that get me every time. If I can really get consistent at them then hopefully it will fall.
Hot For Teacher is still a meh, haven’t been able to get the intro yet, but I’ll keep practicing it.
Fury and Bloodlines are a no. Big no. I seriously despise the WoR engine. Like, it’s dreadful. I cannot combo double bass on there to save my life. Maybe it’s something to do with my calibration but idk, I’ve tried a few different settings and it’s all the same. Any ideas please hit me up (WT era games I use like 6 audio and 12 video for fast double bass songs).
Anyways, I seriously never thought I would get below 5, yet here we are with 4 left. This is the third ever FC of this song I believe, and the first in almost 8.5 years now lol.