I just started having a problem with excessive engine braking on my 2013 RZR 900 XP Walker Evans. I have over 3000 miles on my RZR and I am very familiar with how the engine braking works from a driving standpoint (pros and cons), but I am not very knowledgeable about the mechanical side and what could all of the sudden cause my engine braking to kick in significantly harder than it did for the first 3000 miles. I pulled the cover to the belt housing and everything in there looked extremely clean and the belt, surprisingly enough, also looked great. Thoughts?