If its CVT you should change every 20,000KM in tropical countries like SL due to dust,humidity,heat and extreme driving conditions.The ES8 does wonderfully well on fuel compared to the ES5 and if not for the steering rack issue its the best in the range.The nylon bush remedy is temporary and you will have to replace it with a reconditioned rack in a couple of months
The cost of recondioned racks have gone up because What upul does is he sends about 3-4 three wheelers with his henchmen to areas like Delkanda every day and buys all honda parts availabble in the area and he creates a market for himself.This is one reason you cant find Honda recondioned parts in these shops and it is always better to go to a person like Rohan or Mahesh who are genuine and will talk facts