Thanks a lot for the help, it really was the return that was all clogged up. Cleaned it all and now it's only braking when I want too
I actually did it in the same week that I posted this thread but I kinda forgot to thank you guys
Now I have another doubt... how come the XR650L has 61hp up to the year 2000 and the SLR650 has less than 40? Does anyone know what sort of changes they did on both engines and if I could do the same to my stock engine?