need help with cem

[cptcartman]

I was praticeing flying with the cem on and I was flying the hurricane. I decided to start climbing and once I got up over 10,000ft. I got some serious bucking happening with my plane and it made the whole plane shutter. I messed with the fuel mixture by increasing it and that only made it worse. I then changed the the pitch of the blade seemed to have almost no effect, and other than throttling back and descending I couldn't seem to fix it. Any help on what I might be doing wrong. The radiator was also about 50% most of the time half way on climbing up I saw the temps were rising so I opened it to 100%.