Alternatively, if you go to the Problem Solving sub-forum
here, you can select "Remainder" in the Question Type drop-down menu to filter for Remainder problems.
You'll get 800+ questions by the first filter. That is on average about 100+ questions in each difficulty level. You can further use the Source filter and/or Difficulty Level filter to narrow down the number of questions.
For example, you can get around 270 Remainder questions for 655+ difficulty.