Recently purchased a SunJoe SPX-3500. I had planned on using quick connects at both the trigger and the washer connections. I thought I had ordered the correct fittings the first time when I got these: https://www.amazon.com/gp/product/B07GNJFWNR. They were 15mm M22. When I received them the threads did not work. I had then read that the Sun Joe uses 14mm and not 15mm. Then I bought these: Amazon.com: Twinkle Star Pressure Washer Adapter Set Quick Connect Kit, Metric M22 14mm, TWIS291: Garden & Outdoor. This time there is a flanged end that will not allow the Sun Joe piece (the end with the small black rubber gasket) to enter. I am at a loss now. What am I doing wrong here?