Well, the issues i have had lately are ones i haddnt actually had before. with the burl redwood and the mappa burl, it just soaked it in an didnt build up finish. That kind is always fixable, because i can just level it and spray more until it is level.
But again, after that, no matter what finish i use it always ends up shrinking after i buff it for some reason. It will look immaculate for about 2 weeks then every single microscopic scratch wills how up and the finish ends up looking unsmooth.
I found a new finish the other day that i want to try. It is made for table tops and bar tops, so it is supposed to be rock hard. I will see if that lives up to its name.