getting ready for alot of smoke action this coming weekend so went out and bought a steven raichlen signature series rib rack so I can cram alot of ribs in my 18" wsm. This thing is heavy duty(almost overkill) so i placed it on the lower rack to see if it would fit, it does but with little room between it and the upper rack. Will non st.louis cut spares fit in a vertical position on the lower grate? This rack looks as though the ribs will be almost straight up and down.....