Have a question about repairing brick on my older lnl DaVinci kiln. I have moved this kiln in hast a couple times now. I have broken a few brick cemented back together now my elements need changed was gonna go ahead and replace bricks. My question is I have some 3 inch brick and the bricks that need replaced have element holders still intact does any have experience cutting own channels for element holders. Tools or tips? Also lnl I am pretty sure uses a denser brick then standard k23 would it hold up?