Hi, I asked a question on here about 3 or 4 months ago, as having not used my pressure washer for some months it had started leaking. It made a rattling noise when I moved it. It was suggested the fault might be the O Rings. I have a Karcher extension hose between the front of the unit and the pressure gun. That has seized onto the pressure washer, and however hard i try i cannot shift it. As a result I hadn't got round to stripping the washer. Today I finally got round to trying to sort it. Two issues: 1. I cannot shift the hose from the washer. Any tricks to loosen this please (I have tried squirting GT40 in there, but it is not loosening); and 2. I opened the back off the machine. The noise is two screws about 9mm long and heads about 16-17mm wide rattling around inside. The motor and internal bits are not attached to the case in any way. Any idea where these screws are from, and is the motor supposed to be attached to the case. Do you still thing this is the O-Rings? Thanks for your help, Stuart