Putting in a decent amount of volume in these 9-man turbos majority $10/$25 sngs I am starting to realize how wide or how tight these regulars are calling 10-12bbs with heads up. I am unsure what is the correct response based on their defend tendencies.

For example one $10 sng last night blinds $200/$400/$50(ante) against this particular regular who I was unfamiliar with his tendencies called my 10bb shove with QTo. Knowing this, we can assume he is calling with at least 33% of hands probably anywhere from 33-45% if I had to guess. In this blind level at 10bbs NASH is roughly 65%

Against this calling range would you tighten up a bit and if so how much? If I put in calling range of 33% in this particular situation ICMizer has me shoving wider roughly 93% of hands which is overkill obviously and against 44% has me shoving 57%.