All good advise above, try a kiss test.
Make sure the MT's are firmly inserted into clean sockets, clamp down the tailstock in it's natural landing position and wind it out to meet the drive in headstock.
Feel for any wobble in both sides, up down / sideways play on the headstock spindle will identify worn bearings if that's the problem.
Take pics if it's not perfectly aligned and tell us what and how you did it.
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