Maybe I'm reading you wrong ,but scraping while still notched onto the tree is not a good idea in my mind!I get it to brace height ,examine the brace,this will tell you tons on your tiller.put it on tree pull to acomfort zone draw ,stand back for a quick photo.lscrape it down,exercise while strung,return to the treeand repeat!I always mark the right side so I put it on the tree the same way rvery time.