This is a great stamp set. I wish it had come with an ink pad that fit the hundred chart. Difficult to get fully inked

I bought this set mainly for the 120 chart stamp and found it to be less than perfect. There are slight raised spots on the stamp that leave the impression with either very light sections or areas with no numbers at all depending on how hard one presses on the stamp. I am able to get the stamp to print with some lighter numbers but since the kids don't press as hard or remember where the raised spot is there are always areas without numbers in the impression. The other stamps work well but I wish they were sold separately. Would I recommend this product? I would recommend the number line stamp and the ten frame but not the 120 chart. It would be a great idea if it left a complete stamp but falls short.