Thread locker on transmission bolts

[7DCUDA383A]

When I replaced the transmission Pan and gasket I did not use any thread locker on the bolts , I have not ran her yet still working on the oil pan , I just went to check the bolts and some I had to tighten just slightly , I have the thick blue Moroso gasket and deep pan , do I need locker or just retighten once in awhile.

 

[Challenger RTA]

I have never used a thread locker on them. Never a problem. Stock pan.