I know this is minor stuff in the grand sceme of things, but this had better be worth it for a family summer cruiser. Don't want to tinker on it all winter and end up hating it. I know for a fact I have to get the vibration taken care of before I can enjoy it. Sure it won't be tight as a whistle, but when I was driving it it was vibrating so bad that the rear view mirror was going nuts and the dash sounded as though it had a bee hive in it. I am assuming having tires that aren't ready to explode will help a lot in this area
As for the coil and cap/rotor. Is there any way to test these as far as quality? or is it nothing more than look and see if anything looks worn, etc.