Slow filling toilet
I have a Low Boy one piece Kohler toilet that is 7 years old. When it is flushed the water takes forever to refill the tank. Most of the time it doesn't flush all the way unless we hold down the handle until all the water empties. This was an expensive toilet when purchased. The insides has different parts than what regular toilets have and I don't know how to adjust the fill valve. We are getting very irritated because we always have to use the plunger. Any suggestions?