A slight "Wubbing" noise

I changed out my sprockets to a -1/+2 and took it for a spin yesterday and noticed a speed related "wubbing" noise. it sounded like it was coming from the rear but it's hard to say for sure. I did some trouble shooting while riding. I eliminated the possibility of it being the brakes rubbing. I had the front bearings replaced after I had the rims chromed, as well as had the wheels mounted and balanced professionally. It might be just normal operation with the front sprocket not having that rubber dampener on it. The chain seems loose but when I check it with digital calipers while it's on the center stand it reads 1-1/8" slack (before and after the test ride). i put it gear while on the center stand and the chain flopped up and down more than i thought it should, but I'm not all that proficient when it comes to motorcycles. Has anyone else had this noise?

BTW I'm using a SuperSprox 45t rear and a Drivesystem USA 15t front

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I found that the front sprockets without the rubber damper are indeed noisier than the ones with.

I check my chain slack on the side stand, and tighten it so it just barely touches the guard on the bottom of the swingarm.

did you try putting the bike on main stand and running it in gear...

another trick is to put grease (preferably white) on the out of the chain, take the bike for a spin, till you hear the noise, check for grease marks on the bike to see where the touches...(this is only if the chain is causing it) , if no marks - check somewhere else.

I'll try both of these idea's, nothing like an excuse to ride my VFR around. right now my chain is barely hitting the chain guard when it's in the center stand. from what I read on some other post it gets looser when you set it down on the wheel. since i only have 2k miles on it, my assumption is something's not positioned right.

There's not much clearance between the chain and the sliders on the swingarm; it's not rubbing on the top or bottom one is it?

I think you heard a Wabbit!!!!