R.Shomo

I recently purchased a new to me Allegro Bus motorhome. It has a central vacuum ( tan in color, don't know the brand) and it doesn't work very well. Have cleaned the bag, so it not because of a dirty vac bag. My previous motorhome had a Dirt Devil which worked much better. Has anyone changed out the "Tan" central vac for a Dirt Devil? What issues would I run into with making the swap? Any input wold be helpful. My wife is not happy not and wants a Dirt Devil again. R.Shomo 07 Allegro Bus 40 QSP