Ok, if the crank bolt snugged up to spec and you did not experience binding, it should be ok. The crank pulley (for the serp belt) lining up with all other pullies is a clue that the HB is seated to spec. You can also look at your old balancer's snout. Look for the groove from the crank seal. See if it looks like the crank seal would be sitting on about the same spot on the new balancer's snout.
The crank pulley is connected to the balancer - neither will move by hand unless you eat a box of wheaties an hour.
I hate to say it, but double check your belt routing again. It is easy to mess up the over and under parts around the idler pulley and tensioner pulley. Otherwise, generally speaking, the ribbed part of the belt goes against pullies with ribs on them, and the smooth part of the belt goes against pullies with smooth surfaces.
I wonder if you went over the top of the top idler pulley instead of under it. That would make the belt too big.
Good luck.
The crank pulley is connected to the balancer - neither will move by hand unless you eat a box of wheaties an hour.
I hate to say it, but double check your belt routing again. It is easy to mess up the over and under parts around the idler pulley and tensioner pulley. Otherwise, generally speaking, the ribbed part of the belt goes against pullies with ribs on them, and the smooth part of the belt goes against pullies with smooth surfaces.
I wonder if you went over the top of the top idler pulley instead of under it. That would make the belt too big.
Good luck.