Just changed piston on my 2004 KX85! Got told that wossner was best brand for piston so ordered one of them... came to fitting everything went smoothly put all back together etc tried to give her couple kicks for 1. Noticed compression was hardly there 2. Just didn't want to start even with a bump. I checked spark plug that's fine but just don't know what else to do regarding compression which it wasn't great before piston change but always started first kick...