ct200 trail 90 guy needs parts +tech help

Hello friends, At age 57 I'm beginning to slow down. My last real road bike was an old Wing--Gold Wing. Now I have a late 70's yam 650 twin that is fine for the amount of street riding I do. My 2 favorites are a 73 honda trail 90 and a 61 ct honda. I am trying to locate a carb for the 61, and need a trail 90 guru to help me through shifting problem wth the 90. Anyone traveling to Laconia is welcomed to stop by, I live about five miles from all the activity.

Thanks