I've carried on working on the truck, made some modifications and got the cab fully remote comtrolled and driving pedect now with all functions working.

I've also made great progress on the trailer which is also rear wheel steer with remote servos that steer when cab steers activated by 5th wheel.

Also has pneumatic air jacks as trailer stands and ramps...

Loads to do on it tho! Last pic is my chilling in living room tonight.