Yes its normal, the key work here is "slowly" If your belt tracks correctly, your bike goes straight down the road and feels good, that does not mean that your rear tire is properly aligned. That will eat it up pretty quick, don't ask me how I know this!!
I for one just do not have the touch for a belt alignment. For that I take it in to a local independent shop, they have a jig for that. Perfect every time.
2008 Vision Black gone 2005 TC- Sold
1963 Triumph Bonneville,not sure on color-be awhile
1983 XS 650 Custom Midnight Gold
2007 Ural Patrol Black-Sold
2011 Cross Country White and Silver
2012 Cross Country Red and Silver--Hers
A bunch of other bikes over the years, mostly all good
Life is short, eat dessert first, simple enough.
N/E Georgia and my garage