I tried my first smoke today in my new Masterbuilt 40" electric smoker. The butt was 4lbs. From the Masterbuilt site and other videos it seems that about 1-1 1/4 hours per pound at 225* should have done the trick. I have the built-in probe in the center of the butt, however, after 7 hours the internal temp of the butt is still only 144* IT. I increased the heat to 275* and can see the IT rising. Should it take THAT long to heat up? My other question is how often do you have to add chips. I've been out there almost every hour and there is very little smoke. I put chips in and in a few minutes I have smoke but it seems to fade out within the hour. Is this normal or do you sense a problem? Thanks in advance.