Many, many thanks to Tamiyabigstuff and Berman for your help/advice. Because I followed your advice and went back over my tracks I found that I had put the servo plugs into the MFU the wrong way around!
When I started to plug the leads in I had the MFU UPSIDE DOWN!! What a prize plum lol.. Now that they are in their correct slots everything is working as it should, but I learnt one very good lesson from this and that is if you feel tired while your building then call it a day and have a rest, because mistakes are just waiting to happen. I have been modelling for something like 50 years making the usual plastic kits as well as r/c boats and aircraft and I should have known better.
The Carson radio looks and feels like something out of a second hand store but I must say it does the job albeit in it's own fashion. Carson is a subsidiary of Tamiya in Germany, which is why they g'tee the radio to work with Tamiya Truck's , Tanks and Boats. Also as I'm a glutton for punishment what I would really like to do is to get my Futaba 8J radio OR my Spektrum dx7 v2 to control the truck. Both are excellent radio's and as I use them for my aircraft I feel comfortable with them. I also like to assign switches for various functions and although the Carson has 10 switches in all I'm at a complete loss how to assign them. Going down that road with a Truck seems to make sense to me as it will allow me to get away from having to keep using the Trims. So If anyone can help me with either the 8j or the dx7 please get in touch.
And finally this is for Tamiyabigstuff. Yes I am a fan of the good old Rover P6. I used to rebuild them, and had my own little workshop where I could while away the hours working on a V8 engine or the bodywork. They were brilliant cars in their day and the Rover V8 engine ................... Well, I drool every time I hear one. Ah they were the day's!! lol.
So once again thank you so much chaps. Your advice has been invaluable.
Kindest Regards,
Richard.