I have the same issues with the connector, it's a bit of a pig to use but I do have an aquastop connector on the hose end, so maybe that's the cause. It just requires a bit of brute force and ignorance to get it on, but it looks to me like the screw thread is standard so I'm sure a hozelock connector would fit with no problems.
Aquastop goes on the hose at the exit end...not the tap end (and no it won't prevent the PW getting water if you use one).
C110 here and while it is reliable, it is weak and takes forever to blast down the whole car. Gets the job done but is only just enough, if you can afford a more powerful unit then do that.

C110 here and while it is reliable, it is weak and takes forever to blast down the whole car. Gets the job done but is only just enough, if you can afford a more powerful unit then do that.
