I've been having trouble with my Honda HRA216 bucking really badly when I pull the starter rope. After some internet research, I suspected that the decompressor was not working correctly. I disassembled the engine and pulled out the camshaft. I anticipated finding the spring broken or some other issue with the decompressor. However, other than a little wear as pictured, it seems to be fully functional. Would the little bit of wear on the low speed lobe be enough to cause the decompressor not work and result in bucking when pulling the starter rope? If not, what should I look at next? Thanks in advance.