I just got a new pair of tips for my RHA T20I
They are Spinfit ones and I am wondering about a phenomenon I found.
If you put them all the way in everything sounds with echo and not that good.
Like it has no base and just weird. 
The site says they go all the way in to the ear canal but I just place them on the out side.
Just push lightly and let them sit out there. They sound great like this.
These are large tips and they fit in my ears. 
Am I using them wrong or did I order tips that are waaaay to large. lol