First of all - replacing the cast iron grill grate with the aluminum one is the worst ever decision made by Coleman! As one can tell from the reviews, these grates are extremely unreliable. I will have to see if I can buy a used cast iron one...
Second - the customer support. It is sub-par to say the least... I have a lot of Coleman products (tents, chairs, lights, stove - you name it), and I buy them to last, which means I want reliable support. I sent a message asking about the carry case and optional griddle for this stove, and received an unhelpful suggestion regarding the case, and a link to buy a griddle that does not fit this stove. It is is the user manual - how could you hire associates that don't know basics about Coleman products? And of course I never heard back after I responded to that message... Feels like I will be looking for an alternative brand that's more reliable.