Guys , thanks for all your helpful suggestions .
I'm a dork ......... I'm a dork ............... I'm a dork!
Every thing I did was ok but for one WEE thing .......
I put the leading and trailing shoes back to front . That is , I had the long lining at the front instead of at the back of each wheel.
Instant fix !!
What a waste of 2 days stuffing around . I am so [censored] off with my self.
On the plus side , I now know I have all new brakes for my 10 day trip away and they work well. The truck is going to be much happier now , when it's carrying the camper
