Thanks for the reply Pete...
The bolt feels very loose inside the housing it sits in...i've never had the gun
apart so i don't know if theres a seal in there that has been damaged.The bolt
does not sit against the stock...theres a good 3mm clearence between it and
the stock so it does lock into place...it just jumps up when it's fired.It's still
in warranty so i think i'll send it back again and let Ripley worry about it.