NorthEastBoarda

I've never had to detune a board but now that I am drifting more towards the park scene I think it is time. I've been out about 15 times on my sierrascope and it rides great, I love everything about it. But the edges are absolute razors, they've even managed to slit my snowpants haha. I ride on the east coast so i want to maintain a solid edge hold but its been catching alot more on boxes. I could easily front board on my old board because its edges were completely dull but now I can feel me edges dig into the sides of the boxes. Whats the best way to go about doing this? I used a gummy stone but didnt really knowtice much of a difference. I'm going to a shop tomorow and plan on having them do it. Should I go with a park bevel? If so what degree? And how much should this cost me?