had a small oil leak no big deal put oil in it every so often. went on about a 60mil ride about half way the bike seems to be fighting its self to go and wont go any faster then 45mph. started smoking like crazy. got it home put oil in it fixed my small oil leak went on a 15mil test ride it was going fine tell i got about 2mil in then oil was all over the road at a stop light and would not go over 35got hot and started smoking. any ideas aside from getting a new bike