Which super corsa are they, they make a street version which are the sp or race version which will have either a sc1 or sc2 on them. You can run either without warmers but the race version would be better off with them, mostly to avoid over heat cycling them. I'm assuming your in novice so you may not be going fast enough to keep heat in a race tire, they usually have to be ridden hard. If they are the sc they stated pressure doesn't sound right, I think they are more in the 30 range. Also, the 29/25 pressures are cold, they are better off set hot usually 31/27 range +-1psi.