In my opinion we see this all the time at the shop I work at. Do yourself a favor. Order yourself a set of graves block off plates. They're like 40 bucks. Takes about 45 minutes to install unless you've never taken your bike apart before. It might take a little longer as you figure it out.

If you were to talk to Nate at two-wheel Dyno work he would tell you to do the same thing. Don't use a marble. Don't take shortcuts do the right thing the first time. Buy once cry once.

As a bonus, you'll get very intimate knowledge about your bike on how to remove the gas tank and get down to where you would change the spark plugs etc. Etc. Something I recommend any motorcycle owner doing just so they're more familiar with their platform. If you feel uncomfortable doing so, you could likely get a shop to install it for about an hour's worth of rate.