FYI - On those jerky racks... Cabela's has the same racks for $30... lookup "Cabela's Three-Tier Jerky Rack with Tray", I own about 9 of these racks, I use them all the time, but I don't use them with the fold up legs in place, I find those to be almost worthless...
Also... Cookshack already sells grates that might easily fit in a rack system for a PG500... they are 14x18", they are the same size for their residential smokers SM025, SM045, and SM066. They do also sell brackets that are designed to go inside those smokers, that I think could be used in a PG500, with a little ingenuity....
There is one problem.... well, two... One problem is , they are NOT CHEAP. The other problem is, the right hand side of the PG500, where the door mounts... it infringes on the space that would be needed to easily slide 14x18" racks in and out...
The racks in question are part numbers are...
PV003 , which is a 14x18" nickle plated grate, for $38 , PV003SS is a stainless steel version and costs $59 a piece, and the PV009 which is a nickle plated mesh rack for $54 I've coveted the mesh rack for a long time, but have never been willing to pull the trigger.
I should buy one of these racks listed, just to see what it would take to find a way to make it slide in and out, past the protrusion on the right hand side , where the door mounts...
I have found other grill grates that are a little narrower, that I believe would fit... I even bought a couple, I just have not gotten around to finding a way to build the side brackets to use to hold them in place for cooking on.
Cookshack already sells side brackets that could be used PM022 ( don't know the exact dimensions of these)... but they want like $116 for a set, and I'm not 100% sure they could be tweaked to make work...