Greetings all. I'm the proud new owner of a slightly used Lang 60. The unit is complete and in beautiful shape. Drove 3500 miles in 4 days last week to get it. Made it home last Sunday night. My question is, why is the upper rack so small? It seems that it could be larger and still be put in and out of the unit easily. Would it be a valid thing to try to increas smoking capacity by enlarging the upper rack? Or will I run into flow or uniformity problems?