I posted this video on one of my topics in "performance" but I'll probably have better luck in this section.
I recently bought a Tomos Targa LX 2001. It has a biturbo and is jetted to 56.
I rode it for the first time the other day and I felt like it runs fine before 10mph and after about 20mph once it shifts. At the 10-20mph range it feel stuck or fighting for power.
I was thinking maybe it was something to do with the first gear clutch but when I checked it the cork seemed in good shape. I just recently changed the transmission fluid with type F and made sure there is enough and also that it is not over filled.
Any idea on what else could cause this. Video below.