For the past couple months my bike has just been running not like its self. During start up it coughs and nearly dies until completely warm. I have to give throttle just to keep it running or it will die out when it coughs. I took it to my local dealership and they found i was missing a clamp on my fuel line. The nice guys where i am at replaced my whole fuel line added the clamp and changed my fuel filter. Problem was still there. So I then took it to a shop near me to do the 10,000 mile service. Got it back and was still coughing. Winter hit put it up for a month or two. Heard about seafoam and put 5 oz in when i filled up and bike is running better but still coughing. Though my rear spark plug was stripped but took it to the HD shop again yesterday and they said it wasn't and the looked at my download and i have the stage 1 map on since i have an aftermarket exhaust that i dont know what it is got it that way and stage 1 air cleaner. So right now i am at a stand still. I've spent enough money i kinda wanna fix this without taking it to the dealer. Also the guy who had the bike before me for some reason had the 10r12 spark plugs in it. But i put back stock. I am new here and would really appreciate some help. Thanks!