I have a relatively new toilet that has started getting clogged when there is nothing in it. Most of the time it works fine but sometimes it'll just have a few pieces of TP and some urine and when you go to flush it it clogs. I run an auger through it and it unclogs. Sometimes if you just wait the weight of the water will unclog it. I used an endoscope and couldn't see any obstruction. There isn't a chance that there would be toys / hygiene products in the toilet. So not sure what is going on. Thoughts anyone? Thanks.