Any suggestions please?

[Alamo]

Sancho -
I did that and things improved a lot....see post #12 above.

Thanks to chrisinflight for test driving my truck. A very helpful guy who turned out on a very wet day. Cheers Chris, hope I can return the favour sometime and at least I now know I wasn't imagining things.

[chrisinflight]

No problem Alan, your truck accelerates and drives normal and has smooth gear-changes. I wouldn`t worry about anything.
cheers,
chris

[Alamo]

Thanks Chris

Will return your book and hat to Cowm at the end of the month.

For those who may be interested in what this thread has been about, hopefully there will be a couple of images attached here: