If I just turn the screw on each limb equally, will it turn out OK, or should this really be professionally done?

I had my bow up around 80 lbs in high school, didn't shoot it for years, and recently had it restrung and tuned up. The guy set it at about 63, but I'd like to go a little higher now that I've been pulling that for a while. The archery shop is a long drive.