Were your ribs enhanced? This could lead to a hammy taste.
I put my rub on my ribs right before I get my pit going then put them in the fridge. After the smoker is at temp and putting out thin blue smoke, I take them out of the fridge and put them on the pit.
*Weber Mini WSM* *Weber Touch and Go Performer X3* *Sublime Smoke UDS* *Maverick ET-732 * World's Fastest Blue Thermapen **Pitmaster IQ110*