Yesterday was the second time I encountered this problem. The water spot in the bowl is not large enough

In both cases it was the Toto Ultimate toilet (Power Gravity flush, 3 in flush valve). First one a round bowl, second one elongated.

The bowl does not fill up properly after a flush. In both cases Toto had sent replacement fill and flush valves and they still would not fill up the bowl completely.

In the first case, I tried the Toto replacement, then a Lavelle/Korky and finally a Fluidmaster 400A. The Fluidmaster filled up the bowl properly and resolved the customer complaint of a hard-to-keep-clean bowl. The toilet was about a year and a half old.

Yesterday's case involved customer complaint of inadequate flushing performance. Toilet is about a year old. I noticed the low water spot and the Toto replacement fill valve TSU17A did not help. I installed a Fluidmaster and while the water spot was a bit larger, it still was not full size. I noticed that the Fluidmaster fitting at the end of the refill tube, that clips on to the top of the overflow tube, was restrictive, so I used the refill tube and fitting from the Toto fill valve. That gave me more refill water flow and a full-sized water spot. I think this has resolved the inadequate flushing performance problem, if not, I will be hearing from the customer next week.

Anyone else encountered this problem before?