Replying to Quick repsone, pow skis

alright i could not find any threads on this. i just bought last years VCT for a real good price and i told the shop i wanted them center mounted. i go today to go and get them and they mounted them normally telling me that the shop thought that would be better. now i have them and trying to figure out whether or not to bring them back or leave them be.
Anyone know how big of a difference it will make skiing and landing switch, i have been riding center mounted skis for like four years now. and i need them by tomorrow so if i need them center mounted i need to do it soon any advice would be great
thanks