Thanks for your reply Matt,

I tried and it did the same thing
then i turned it past the high mark and tried.. it did a full rotation back to high and bounced yet again!
Ive had the servo apart now and by the looks there is the servo motor and then another small sensor conected by a series of small cogs that turns with the motor (im quessing its like another position sensor that tells the servo motor what to do?) i think it is this sensor that may be broken as the servo motor works, the tps works, and the PGM works.. all tested.

I will try to find a working servo and try again..
Anyone with a working RC Servo please contact me, i have an add in the clasifieds.

Thanks for all the replies