I will add to the above description that besides regular HG job I took care after valves too.
What about some quarantine, let's say 100-300 miles of easy ride? The whole new set up shouldn't settle down?
I would like to be 100% sure that I will not make any mistake at this point.
My rig recently went through a serious "hart attack" - blown HG. Finally I have managed to fix it but at the same time I lost faith in its durability.
I can say that I am a petrol-head and I do care about my rigs. I also had a few vehicles in my stable so far - 80 was the first who failed me...