Upon arrival customer had a toilet that was intermittently not filling. Customer would have to jiggle the fill valve to get it to work. I removed the fill valve and supply line and replaced it with a new Fluidmaster fill valve. I tested the function on the fill valve and toilet and found that the valve was functioning properly with no leaks present at the time of the service. I also adjusted the position of the chain in the toilet handle in the downstairs toilet to allow ease of function.