Spare parts for Champion Pressure Washer CPW1900?

I own a Champion Power Washer model CPW1900 which to date I have been very happy with.

Unfortunately I am now unable to use this power washer as the "O" ring on both the attachments has perished and I am unable to find any replacement "O" rings of that size, having tried the usual retail outlets and plumbing stores etc., and also place of purchase, but none of them stock spare parts for these power washers and therefore, sadly, I am now unable to use the power washer.

Could you please advise of any retail shop, or anywhere at all, where I might be able to purchase some of these "O" rings.

Also, is it possible to purchase, (from anywhere), a replacement dirt-blasting lance (the one with the ball-bearing in the end of it)?

Your company is listed in the manual as stockist. I have tried to contact you by telephone (permanently busy line!!) so have been unable to contact you by telephone.

Failing this I guess I will have to invest in another make of pressure washer ensuring in the first place that I am able to obtain spares.

I do hope you are able to help me as to where I can obtain spare parts, and I look forward to your early reply.

Thank you,

JOHN BAXTER