remove roof air?

Hi,

we are moving to a place with a lower garage - but want to park the tm in the garage. If we didn't have the roof air - it would fit easily. We have only used our air once--and could live without it--but don't want to get rid of it permanently because of resale value. does anyone know if it is possible to remove the air and then add it back on later? how labor intensive would that be? really expensive?

we only need to lose about 2" ... is there away to lower TM - such as letting air out of tires to get the TM in?

thanks for any input.
Teresa