My son has a 1997 RT100, new to us and no other details on how it was maintained or stored Ok here is the problem Bike starts with 1 or 2 kicks Its idles fine until choke is pushed in, once choke is in bike will surge then die Bike will not stay running with choke in even when riding Carburetor has been cleaned, and adjusted, float set to spec too Seems to me the bike is lean, it won’t run long enough with me riding it to get any good reading off the plug. When tooling down the road as I up shift to second bike begins to flatten out, if I am quick I can get it to third but at half throttle again it flattens out. Sounds like a carburetor to me however; a friend thinks it may be the rings or a crankcase seal. Any thoughts? I am going to do a compression check I assume it should be atleast 100 psi. Any help will be appreciated.