Never heard of a 13x6-10 prop. you mean a 13x10 for example or (13x7, 13x8, 13x9 etc.) instead of a 13x6? Also, What brand are you referring to?

I need clarification to properly answer your question---

Consequently, I go to Hobby People and just ask them if I can come behind the counter because they never kno what I am asking for or talking about [X(]

Moki
Irvine
Jett

They just push Magnums at me