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If you are quad dominant this is a place that needs attention.
What is causing you to be quad dominant? Is it lack of mobility somewhere else?
You need to work on having your femor placement and your hip flexors.
This is the limiting factor.
Here are some episode to check.
Episode 04: Silent P in Filet, Very Paleo
Super Sumo Groin Mob
Episode 347: Stiffness Kills– New Anterior Hip Flossing Tweaks
There are several hip opener& hip flexion episodes if you search for it,
On the CrossFit Journal
A Correlate Test for Hip Flexibility
Mobilizing the Hip
Midline Stabilization Part 10: Opening up the Hip