Hi. Can anyone help. My toilet isnt sending water to ‘all the way round the rim’ of that makes sense. When i flush. The bit furthest from the tank - water doesnt flush out of the rim there. Iv tried scrubbing. Iv tried uber lime/urine gels from amazon, iv even looked at youtube and figured out how to increase water in tank in case it was just a pressure thing. But nothings helped. Any ideas? Thanks!