Hi Bill, I don't know if you remember what I have on mine but it has saved my torch many times..........

Plan as you may..... Hover as you might....... It STILL happens!
I use a rapid clearance of 1 1/2", slat space of 4". For the most part it is OK.
You can't always lay out your part for NO tip ups.
Murphy IS lurking!
I like the mag base idea but it adds one more thing to keep clean and to monkey with..... But you may see one on my machine someday!
Glad to hear you are up and running. Have fun, we should get together sometime, I know a few people from out at the plant.....have a couple of stories too

Good luck, Steve