No problem. I had the same issue because if you follow Dales instructions he makes no mention of where the screws should be with the larger pilots in there so you turn the recommended 3.75 turns and it all goes to shit. Now that they are more or less where they should be or at least closer you should be getting a more normal fueling. Because it's so cold you will probably be experiencing a little leaness, which you should be. If it ran perfectly at 32 degrees at summer temps you'd be back to rich hell-land. After the sync and when the temps go up a bit you'll be in better shape to adjust as necessary. Hell 2.5 may be a little rich still at 75F but at least your not drowning your engine now and your fuel economy will go up as well as the power. If you're good at say 2.25 at 75F, now you know when fall comes around and temps go below say 50F you can turn the mixture screws out to 2.5 to give you a little juice when its colder to improve warmups and drivability. If the previous owner synced it with his cluster phucked shim job then yeah I'm sorry it will probably need a sync very very badly.
That link that txbandit gave you is a good one. Take a perusal and see if you're confident enough to try the poor mans carb sync. If you need help just grab one of us here to walk you through the sync process, it only takes 30 mins and the hardest part is the crazy vacuum nipple positions on the carbs.