My 340 began to leak grease after about 2 years. The sealer they use at the seams began to wear away. I’m sure recteq would’ve offered to help or even send a free tube, but I just went to Amazon and bought this:
Permatex 81160 High-Temp Red RTV Silicone Gasket, 3 oz
This is the same sealer that recteq sells on their website but it’s only about $7 on Amazon. You’ll need to clean and degrease the seams using Dawn dish liquid or isopropyl before applying the sealer, but it fixes the leak. It will need to cure before using the grill.
When I purchased my 700 I put an extra bead on all seams before even burning the grill in. No leaks so far.
Thank you for the feedback! I attempted to find the leak, as well as snapped some poorly lit pics of the inside and out but still couldn't locate anything. Another call to the folks at recteq resulted in them shipping me a tube. I'll follow your advice and make sure it is primed and cured.