I just got done cleaning the carb, replacing the throttle cable and changing the plug on my 99 YZ 400F. After I got it all back together and went to fire it up I had a huge loss of compression, it will kick all the way through with little resistance like a 125. Before I could not get it to turn all the way through without using the compression release, the plug is tight and the compression release is not stuck open. Anyone else have any idea of what it could be???