Just for future reference, if yours has a the sweep system but just a disc or frisbee style ash catcher, that is an OTS (one touch silver). If it has the bucket style underneath it's a OTP (one touch premium). I believe these used be the one touch golds. The premiums also have a lid thermo and built in tool hooks on the handle. There is also the master touch which has an upgraded cooking rack (gourmet system), taller wheels, a lid bale holder, built in tool hooks on the handle, and a rubber piece on the lid damper.
If I forgot something or am wrong on a part, please chime in. I like to know as well.
@Cellar2ful is spot on about the conversion. I've never done one, but would like to for my 22 and 18 OTS.
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