buy some silicon carbide shelves to go across the top, then 2 score or soft brick on top of that. with a train there is no need for an arch and your kiln it little so you really can't crawl in to stack the work.
Hey Ian, I actually hung out with Dryden for our B-days. All is well here and I am going to be firing the soda kiln next week. I will get some new images downloaded. What r u up to?