--> Band meets in Nashville
--> Jon brings in scrappy iPhone recording demos
--> Every one works on their parts and the bed tracks are recorded
--> Additional instruments and things are tweaked in the overdub stage

Why are Tico and Dave's parts being questioned? Shanks barely wrote for the album, everyone wrote their own parts and built the songs bed tracks. Sure I'd prefer it if David did ALL the key parts and Shanks backed off performing but there's no real debate here, the band got together and did the majority of the tracks together.