Engine disassembly

[carvin12_imp]

I was looking though the other threads and I couldn't find one where someone took apart their engine. I have a few questions on the topic. 1: Is it necessary to remove the engine from the frame to get the heads and cylinders off (is there enough room under the backbone)? 2: Has anyone polished the cooling fin edges? And 3: Would polishing the fin edges affect the engine's ability to cool? I love the look of polished edges on air-cooled engines and I'm just wondering if anyone has tried it on their CB yet.