well i did as suggested and the design of the wepon r tank means that the return just shot the fluid out the ressie until it was nearly empty and i couldn't turn the wheel for some reason so i had to make a little device to sit on top of the bottle which stopped the return spitting all the fluid straight out the top but still allowed the air to escape. So far, from the little driving i have done in it since, it seems to have sorted the problem but need to check on certain corners that i know it happened on to check properly but seems ok, thanks for the help guys.