Hi guys... since my last mod didn't require drilling/cutting/painting... ) If you look at the final picture: STEP1. Widen both holes [fig.A] approx. 5mm (angled like [END] / [FRONT]) STEP2. Remove Booster assembly (2x short screws) STEP3. Remove white assembly part that was inside the red section (4x long) STEP4. Plug in the 2 loose boosterpacks [fig.B] to resemble [fig.C] C & C welcome have fun!!