If you have vertical dropouts and a bit of skill, you can check for dropout parallelism with a home made tool that'll cost you just a few bucks. Buy a 3/8" threaded rod about 8" long, and 2 nuts and washers for it. Attache the rod to one dropout so it just barely comes to the other. Tighten it and look through the other dropout. The end of the rod should be perfectly aligned with the dropout. Repeat from the other side. You won't be able to bend the dropouts using this because it isn't strong enough, but it'll serve as a decent gauge.

BTW- I don't think that non-parallel dropouts alone could cause your problem, is seems to be a more complex frame alignment issue. If you opt to have the LBS check it, make sure it's one used to dealing with high end road bikes with a mechanic that knows about frame alignment. You seem to have a carbon frame, so if the error can't be fixed by filing the dropout axle position, you're SOL.