Do you have the wrench that came with it? It is a flat thing with a half circle cut out a handle on the middle of the circle, the ends of the metal are bent down
Also the handle may have a hex wrench in it
Use the hex wrench to remove the handle.. Then use the "Spanner" to tighten the ring about 1/2 turn and see if that helps.. You may need to tighten even more
IF THAT does nto do it. take the inner ring loose (NOTE TURN OFF WATER and bleed pressure first) and remove the ball/handle assembly, Under that you will find two rubber things on springs, Remove them as well GO TO a good hardware and hand them to the plumbing clerk...
You are looking at 10-25 dollars in parts,
If There is a name like DELTA or PEARLESS or ____ on the trim, Write it down and bring it to hardware too.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times