when my bike is running I can't shift into neutral from first. When I accelerate through first gear and go to shift into second its fine and when I turn the bike off and rock it it will shift but while running there's no way its moving from first while stopped. Its a hydralic clutch and I have flushed the fluid and tried bleeding it many times but this doesn't seem to be the problem. I can't see any leaking anywhere either. are there any adjustments I can make?