Backdoor Roth IRA - What should I do with Excess Contribution

Background

I went through the process of implementing the backdoor Roth IRA for both my wife and myself.   I contributed the max limit to each traditional IRA.  I received a 1099-R for myself showing excess of a dollar (rounded up) and my wife's 1099-R shows an excess of $6.  Now TT is saying "You Currently have a Penalty".  and recommends I remove the excess contribution but the penalty comes out to be 0 in both cases.

Question

1. Should I just enter the max contribution limit into TT?
2. Should I bother removing the excess contribution?
3. What is the long term ramification if I don't remove the excess amount?  In other words:
   • Will this particular instance come up every every year when filling out taxes?
   • Will I get hit with some huge penalty when I finally retire and use the money?
4. I can't imagine this is unique to me/us but assuming this is a problem, how do I avoid it in the future?  Just contribute $10 under the limit?

Thanks for any help!