Kitten with runny Poo

Hi All,

we have a lovely 41/2 month old kitten, she is healthy and happy with lots of energy for playing but when she uses her litter one out of 2 times will be a runny consistency (which can end up on the wall after she has dug into her litter tray)...she goes maybe 3 times a day. We feed her royal canin wet kitten 1 pouch and about 40g of royal canin dry kitten. Has anyone had the same problem? Is this normal for a young kitten. She has had her shots, spayed, wormed etc. Thanks

Declan