Well I appreciate the information , gives me a bit more confidence. The lower rack will have more clearance when it get to it.
UPDATE: decided to cut out the slides that were probably going to be too tight. Re-did them with a bit more clearance and they slide well..if they completely expanded 1/8 all around, it will still be good, I have a 1/4 " side to Side gap and about 5/32 top gap with the expanded metal on it.
I only know that with my luck, the tray would have slid out and after 3 hours of cook time, it would never have gone back in......
Make no mistake, there ain't no powder in this Puff ! And... I'm not really a crazy person but I play one in real life