I have the 11 1/2' oneway coring system and have been using it for about a year. Mainly on traditional style bowls. Recently on a natural edge bowl I got a very nasty catch on the support finger as it caught on a wing of the bowl from the air to wood gap on natural edge bowls. I've been studying and trying to find info on using the tool to core natural edge bowls but can't find anyone that uses it that way. Lots of info on traditional bowl coring. I also have to be careful on the arc of the finger as it will rub on the outside top and inside bottom, depending on the size of bowl and depth of cut. I know the geometry of these two can really change the way the finger rides in the cut, and wood moves as you cut so all of that combined means it will rub a bit. Not big issue on traditional bowls since it can't really catch that easily but, on a natural edge core it can be a disaster. Plus, the wood starts moving quickly on thin natural edge turns so it can start out great and then be a tough fit for the finger. Any advice or inputs on how best to manage the finger rub or catch potential on this tool? I saw one person ground away some of the steel on the bottom inside edge of the the support finger.