Sounds to me like you need to tighten the cable. Do you have the steeda clutch adjustment system?

https://www.amazon.com/Steeda-555-70.../dp/B002L1IZMQ

This system has an easy adjustment knob on the firewall plus the factory adjustment on the transmission end of the cable. If you dont have this kit installed youll have to go to adjust the cable from under the car. Many youtube how to videos.

99% sure this is your problem. Your clutch isnt getting full disengagement.

Still new to CMC but i believe per the rules this “mechanism” is allowed.

6.26 Clutch/Flywheel
6.26.1 Any single disc clutch and pressure plate of OEM stock diameter may be used provided that it is bolted directly to the unmodified OEM stock flywheel and the pressure plate is made of the same material as OEM.
6.26.2 Any clutch actuating cable and linkage mechanisms or master and slave cylinders as applicable may be used.