The mop head attachment was broken, so I recreate a mop head adaptor. I design a new flower base with two screws to tighten. Also put additional curvature on the bottom base so that during mopping, the pressure will create better force on the mop string.
The new base will have more rooms for the mop string to exit out.
During the usage, you may need to tighten more as the mop string get wet, the gap in-between it will be lesser.
Just incase the mop string get tingle up, just unscrew and redo the string and put it back... it is flexible...