I have done some mods to my NB offset and am a little worried about materials and introducing chemicals into the smoke in the cooking chamber. I used some zinc nuts and bolts for posts to create a new grate level - will there be any toxin introduced into the cooking chamber by using zinc? Also, I got some 1/4" steel plates to use for tuning plates but they were primed/painted - I stripped the primer with Strip-eeze then washed the plates with dishsoap and water. The Strip-eeze is supposed to be rinsed with water and thats what I did prior to the dishsoap and water - should I worry at all about faint traces of primer (very tiny amount) and any remnants of the strip-eeze, again probably tiny amounts, on the plates, once heated in the cooking chamber? Of course, bear in mind temp in the smoker will usually be 225. I have coated all the new parts with spray vegetable oil and the smoker is "curing" with a small amount of charcoal and wood right now. All opinions are welcome. Thanks. Here's some pictures: