[Hoover]

I noticed the number of views on this thread is high so it seems there are a lot who are interested and it is worth pursuing.

Luckily the trash was not yet thrown out. The plastic tubing went in one side ok and we marked this with a marker and was 3/4 inches. On the other side it hit resistance 1/4 inch sooner and we marked this at 1/2 inches.

I had the kids saw the ends off to get a closer look at how the tubes fit in the openings. Ah ha! Somehow during manufacturing, the plastic entered to opening to cause an obstruction. It can be seen easily when holding the hole up to the light. It is definitely too narrow.

I wish I had a good close up camera to post pictures.