Removing head and ring, rotating to different position

Hi,
Sorry if this topic has been covered already but I couldn't find an answer to this question:
I have fiberglass congas from the 80's and am wondering if it's a good idea to remove the
head and ring [intact], rotate it 180 degrees and put it back on after cleaning. Would this be beneficial?
Assuming that half the head will now be pulled down on a different part of the drum,
will this change be good? Also my tumba ring is slightly oval: Does that mean if and when
I take the head and ring of [again I don't plan on changing the head] that my fiberglass drum
will be slightly oval too?
Heck. I've never taken a drum head off: does the head and ring come off intact and
you just put it back on?
Sorry if this topic has been covered already but I couldn't find an answer to this question:
I have fiberglass congas from the 80's and am wondering if it's a good idea to remove the
head and ring [intact], rotate it 180 degrees and put it back on after cleaning. Would this be beneficial?
Assuming that half the head will now be pulled down on a different part of the drum,
will this change be good? Also my tumba ring is slightly oval: Does that mean if and when
I take the head and ring of [again I don't plan on changing the head] that my fiberglass drum
will be slightly oval too?
Heck. I've never taken a drum head off: does the head and ring come off intact and
you just put it back on?