After much research decided to add some modifications which works on most offset sytles. Ok file is two big to attach.. Bacic was I extended the stack to rack level. Added a flash guard to defelect heat and smoke lower into the grill section. This cost me $5.00 for the material and $10 for the tin snips. Next step I added a thermonitor at rack height. Never would have guessed running about 100-125 differance less from the top to rack. Cost $8.