The Buell XB's are very sensitive to suspension setup; if it wasn't set up properly that might explain the heavy feeling steering. Just go by the recommended settings in the owner's manual and adjust for your weight. 99% of the time, that'll be spot-on, but you can fine-tune from there if necessary. And of course you never know if a dealer like that bothered to check the tire pressure so it could be something as simple as that.
+1 on the shifter adjustment. It shouldn't feel like that and it's easy to adjust.
As far as jacking up the bike, the stock muffler (or a modified one like a Drummer) will support the weight of the bike. If you look carefully, two jacking points are indicated. You can build a cradle out of 2x4's that'll allow you to support it with a standard motorcycle jack. Here's a template:
Here's one version under an XB:
You can use 2x4's for the sides, all-thread like this guy did, or some people don't even bother with sides.