Stihl electric pressure washer hose

I have a Stihl RE 109 electric pressure washer that I would like to replace the horrible plastic hose on. It appears that Stihl uses a proprietary quick connector on both ends of the hose. Has anyone here ever adapted a "normal" pressure washer hose to one of these? I have Googled adapters and checked Amazon and haven't found anything that looks right. Thanks