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My folks had a similar issue with PB/ contractor. IG gunite pool was 1 to 1-1/2" out of whack (level). Furthermore, they also poured the deck wrong. Long story short... They had everything well documented as it appears you do as well. They obtained several quotations to complete the process from other contractors. A formal letter was written to the PB explaining all of the problems including all domcumentation they had and what was expected of the PB to complete the job he was hired to do. Notice was given to the PB that if demands were not met that the next form of communication would be in front of a judge in small claims court. My folks ended up with a level pool and a nice looking deck from the original PB. Not sure if you have reached that breaking point yet but put the stress back on your PB. The build is not correct and you are not satisfied with the outcome. Good luck and keep us posted.