Thanks for the suggestion. I'm on the fence as to how long to wait. I found the debate in this thread useful. I also checked the Gibson process video to confirm that they use 4-6 days for cure time. I will note that I did already sand the finish off the back to reapply the grain filler, and despite being finished for only a few days at that point, the finish didn't gum up when I sanded. Regardless, I think 1 week as suggested by Mohawk on the product data sheet might be too little to allow the finish to sink in, so I'll target at least two weeks.