Casall Crosstrainer Infinity 1.3X

A home use crosstrainer inspired by clean Scandinavian design, the Infinity1.3X allows you to perform effective cardio workouts in the comfort of your home with minimal impact to your joints. The 12 training programs are suitable for all user levels while the 9kg swing wheel provides a smooth and comfortable workout.
A direct upgrade from the Casall Crosstrainer Infinity 1.2X, the 1.3X has the highest quality of its line. It includes a chest belt for you to monitor your physical conditions without having to grip onto the pulse sensor constantly. It is suitable for serious users who are looking for both comfort and functionality.

SPECIFICATIONS:
-Pulse sensors and chest belt.
-Time/Speed/Distance/Calories/Pulse/Recovery/RPM/Manual/Watt/HRC/User profiles/12programs / Body fat
-Recommended height: 150-192cm
-9 kg swing wheel.
-16 resistance levels.
-Heart rate recovery.
-Max user weight 150 kg.
-Transport wheels.
-Stride length 40 cm.
-Net weight of product: 50,3 kg
-Assembly size: 145 cm L x 62 cm W x 172 cm.
-Box size and weight: 122cm x 42cm x 65cm/55kg
-Adjustable pedals: 3cm
-Recommended user height: 150-192cm

[MrDLYouTube]

I have this, and am very happy with it. However, it has started to make A LOT of creaking sounds. I've gone over all the bolts/screws and everything is good. Any idea how I can stop it? It seems to be from the housing/plastic.