After the disastrous first attempt I went about the next one entirely different. Used only 3oz of oak. First 2 hrs at just 185 deg. Transferred it to alum deep pan and covered with foil with holes punched in it, then 10 hrs at 210, followed by about 4 hrs at 140. Internal temp was around 150. Inserted probe set for 190 and kicked the cook temp up to 240. Came out tender as can be and still juicy. Only issue is the smoke taste is still on the bitter side and kind of overpowering. I'll try cleaning the inside of the smoker just in case it's been over-smoked from previous cook. BTW, what looks like a good smoke ring is from a sprinkling with Morton's Tender Quick curing salt overnight prior to the rub.