Product review (5 stars): Nice Looking Grill with Plenty of Power
Update: Found a solution to the cracked shafts in the knobs.

Genuine Oilite (SAE 841) Sintered Bronze Metric Flanged Sleeve Bearings 10 mm. ID x 13 mm. OD x 12 mm. Length x 16 mm. Flange Diameter x 1.5 mm. Flange Thickness

https://www.amazon.com/gp/product/B006AWM528/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

The shafts are 10.05 mm and the sleeve bearings are 10mm ID so they are a very tight fit. I used a large (6" Capri Tools) vise with soft jaws to press them on. There is no room now for the shaft to split. See attached pictures.

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This looks really nice installed. Similar to the GE Cafe but I prefer the grill pattern on this one. Love the blue lights under the knobs. Easy enough to install but was slightly smaller than our previous model so we got a custom base made up by Micro Trim (~$200) and that worked very well. Yes, the grill is quite high above the burners but heat rises and this thing has a ton of power anyway, so I wouldn't change anything there and you get a nice clear view of the flame.

The knobs are a bit of a mystery. They are solid metal with a plastic insert but turning them feels a bit rough in places. I checked to see if maybe the shaft is binding but it wasn't so it's just the valves they use. Odd for such a high end unit to have such a rough and inconsistent feel between the different controls. The knobs on our 20 year old Kitchenaid were all smooth as silk. Not a practical issue mind you, I think the people who break knobs either don't push them in properly before turning them or turn them the wrong way.

Overall very happy, this has definitely added a bit of class to our kitchen.