I'm going to be applying my 6th and last coat of Brightside tomorrow morning. I've used a 5% dilution w/ 333 for the last 3 coats (10% for the first 2). I've read that for best gloss the last coat should be undiluted. What is the downside to doing this? Are there more problems with lines? Is there anything I should know before doing this

My 5th coat is pictured.

thanks,

Mitch