I'm about to obtain a 1x15 cabinet to go with a 4x10. Currently, the 4x10 has casters attached. What's the best way to set the stack up? I'm inclined to remove the casters from the 4x10 and put it on top of the 1x15. The 1x15 doesn't have casters and I don't think it has holes for them, either. Since I generally end up pushing this thing from 1 room to another (church bass), the casters sure come in handy. The 1x15 weighs about 45 lb. The 4x10 is about 95 lb. I'd surely hate to lift this thing when I want to move it from room to room. Would I lose anything soundwise from putting the 1x15 on top (seems to me I would)?Any advice? On stacking cabs, that is? Thanks.