Will the placement of casters on speaker stands degrade the performance


I recently purchased a new (used) pair of Magnapan 3.7i's.  They replaced a pair of 1.7's.  when I got the 1.7's I worked for weeks to get them tuned to the room.  At the end of that process, the 1.7's were like magic.  I am now going through the same process with the 3.7i's.  As I am getting older, the 3.7's (with Mye Stands) are much harder to move on my carpet.  My Question - Will placing casters under the stands degrade the sound quality and does anyone know the bolt and thread size for the Mye stands.  I would kindly appreciate knowledge, advice, opinion, etc.
Thanks in advance, js 
johnspain
I have iso acoustics GAIA ll footers on my kanta 3 speakers. I’m going to put them on furniture sliders to find the best spot then remove the sliders. Perhaps that would work in your set up. 
Happy listening ! 
OP,
I suspect that you know where the 1.7s were positioned to a very high degree.  Having said that I would put the 3.7i's in the same position as a starting point.  

Go out and buy a 4'x8' sheet of masonite less than $20:
https://www.homedepot.com/p/Hardboard-Tempered-Panel-Common-3-16-in-x-4-ft-x-8-ft-Actual-0-175-in-x-...
Have them cut it in half.

Now you have two 4'x4' sheets to center under the speakers in the aforementioned placement.  Speakers should move very easily as masonite is pretty slick.  You won't have any height problems either.

Just a different take on your issue.

Regards,
barts
Why not use the castors to move them into place then switch over to solid footing once you obtain desired sound stage?  A dealer here strongly recommend master setting.  I wonder how many in this group have set their speakers this way.
Nail em’ down any way you can, its why there are spikes. Any movement in your speaker, will smear the sound.

I had Matrix 1s steel strapped with turnbuckles to 200lb stumps, that had cut off nails on the bottoms for a while. Never had a sound stage that good before or since.
Thanks so much to those who contributed thoughtful and reasonable content.  I managed to ignore those who were just trying to be cute, childish, and insulting.  I am especially thankful for the Magnepan resource that gave me the bolt size.  While I looked there I just missed the notation.
Thanks to all - even those submitting the useless attempts at humor.