I would suggest getting a bike that has the accessories you are interested in. Things like pipes, windshields, seats, or whatever you may like. Finding a bike with some of the accessories you like will probably save you some money in the end.:thumbs up:
If you go to Sears get a commpression tester as well, take out all of the plugs and test your cylinders compression, they should be within about 4lbs of each other. This will tell you if you have internal problems.
Just a thought but wouldn't the engine run smoother at idle on the front two...
I would check the connections and relays that you might have moved to replace the battery. Your problem could easily be a loose connector or relay (easy fix if you can find it). Try wiggling suspect connections with the key on and see it your console lights come on.:hmmm: