I built a UDS : 34'' drum, weber 22,5'' lid, 1 grill at 2,5'' from top ( will add a second grill), instead of 4 pipes with caps and ball valve, i am using 6 smaller holes ( 1/4'' ) times 4 blocked with fridge magnet.
I did 2 jerk pork shoulders (3 hours) and added chicken legs ( for the last 2 hours). Tried 7 lbs of charcoal, with 3 pucks of maple (drilled holes in them and stuffed them with allspice). Lowest temp was 240 F, to grill the chicken in the end, highest temp with all the holes opened was 380 F.
I bought a drum with 6 holes in the bottom that i will plug with screws to try to lower the temp to 225 F.
I will add holes to the vents to get up to 400 F.
I oversmoked the jerk pork.
Overall, happy the the result, the meat was juicy and tender.
Can't wait to do ribs for my friends....
Sorry for the poor quality picture, used the laptop ( could not find working batteries). Notice the thermometer probe older, a green tomato from the garden...