Tire possibly rubbing against something
I did some work on my '89 Honda Transalp this weekend and now it seems like something is rubbing against a tire at regular intervals. It feels like theres a point where the brake pad is coming in contact with the disc every rotation, but I'm not sure since I don't have a stand for the bike and its hard to look at rotating wheels when you're driving. Also, after driving the bike for 20 minutes the disc wasn't particularly warm as I would expect if the brake was slightly engaged.
The work done was a flushing of the front brake fluid, changing the fork spring oil and tightening the chain. I also fiddled with the wingnut at the end of the rear brake rod a little. When I was changing the fork oil I knocked the bike over, while pulling out the springs (wasn't quite prepared for the drop that happens). The wind screen broke and the plastic got a little banged up but it didn't look like there was any other damage.
Does anyone have any thoughts on what might be causing the rub feeling?
Thoughts I've had so far are:
The brake fluid is to full and slightly engaging the brakes, but I read that that isn't possible.
The fork oil isn't even in the two forks so the wheel is slightly tilted, but I would expect a constant rub, not intermittent.
The chain is old and due for a change, and maybe I'm misinterpreting the feel altogether.
The drop bent something that I'm not seeing for some reason.
Any help is much appreciated.