Stanley superstar combustion

[tridimnaw]

i serviced a stanley superstar this morning. On the analyser the co2 was around 8 and co went to 190 initally, after a few mins the co dropped to 49ppm and the co2 went to 10.1 %, once i moved the baffles the readings would spike again, is this normal gor a stanley? Also how do u guys seal the hot plate bolts? There was a small leakage afaound the bolt, im going back this afternoon to as it needs an oil line and i fidnt have one in stock