My buddy is helping me assemble my motor and we're having problems with the crank. This is a ZC block. We've installed the main bearings and thrust bearings and everytime we do the final torque down at 49ft-lbs, it seems to be too tight. You can spin the crank freely but as soon as you stop and try to spin it again it gets stuck and requires a decent amount of force to get it to turn again. But once it spins it's fine, it's when u stop and try to go again that's causing us problems. Any ideas or thoughts. All the bearings have been well lubricated as well.