That's always been my impression of rotaries. If you're going to own one, you better know how to rebuild one yourself. Was watching a 1320 video with an orange 7 second FD on the 13b. He said he could do at most 30 passes, before he had to tear the engine down.
I know drag cars burn through parts, but I'm no mechanic and I could never afford tearing my engine down every 30 passes unless I knew how to do it myself.