In both the pictures the shifting drum on the right came out of my CT70HK1 (Engine Serial #CT70HE 204763). The problem is I'm not sure if it is correct. I'm thinking it might be for a three speed, because when the bike did run it would lock up in third gear. The shifting drum on the right came with a 4 speed transmission that I bought. I noticed that the pin placement among other things that are different. My question is, which one should I use? Also, I thought maybe one shifting drum was from an earlier H model. Please, someone help me solve this mystery! Thanks.