Fuel problem I think

[hooligan971]

I rode yesterday for the first time since the high rpm vibration showed up and now have a new symptom. Bike idles fine but misses and sputters until up to about 4000 rpm unless I go real easy on the throttle, once up to speed she seems to be ok except for the buzzy vibration (not a noticeable loss of power) I'm thinking a fuel issue. Bike has less than 7000 miles so I doubt plugs and wires are the problem but not sure.  
By the way, I drained the fuel and replaced with new just in case there might have been water in the last gas I bought but that wasn't the problem.
I hope to get the tank off this evening to check for air leaks in fuel system and replace filter and check plugs.
 Any suggestions ? I need her back on the road asap.
  Thanks