HI Guys, i pulled it apart as i was told it would more than likely be the push rod collapsing. I went and bought a new centre push rod and found that it is around 3mm longer than the one that was in there, due to wear and squashing from softness. So far it seems to be alright but have only been able to travel around 5km's due to time. Im going to head out this arvo and fingers crossed it dosent come home on a trailer again. Thanks for your input guys and i will keep you posted on how i go.
Cheers Glenn