hamonic balancer hitting

We are putting in the 360, it was taken apart over a year ago and just sat on shelf until now, the balancer came off the 360 and was put back on but now it is hitting where the timing marks are, the timing cover is brand new so i was thinking the cover is made wrong in that area
Ok, then I believe we have narrowed it down. I would surmise your timing cover is made for a smaller diameter balancer than what you have.