Re: Im new at this and I am looking for help...
Running 50:1 may have damaged the engine, it needs more oil for break in. What kind of oil is it? If it is cheap stuff from a gas station, I wouldn't be surprised if the engine is damaged, but it would have been a gradual decrease in power from loss of compression unless you have bearing failure. In that case, you will need to take apart the engine to find out what is wrong. Take it to a small engine shop if you aren't comfortable with taking apart the engine, but it is very simple. Read up a lot on the troubleshooting and repair threads. Good luck!
some people say that a motorbike defeats the purpose of a bike. i tell them to get a flintstone's car.