hey tt'ers After reading a few threads on the obeln needle I thought I would give it a try. previuously she was running fairly sweet with a few taffy recommended jetting changes- 160mj,200maj,42 pilot,75paj,obdrq needle pos 3, bk mod, lid off and stock exhaust. I switched to the recommended obeln pos 4, 165 mj combo and was pretty dissapointed with the result. From just below half throttle to almost wide open she would tend to blubber and misfire a bit here and there. Down low it felt pretty crisp but the top end felt a bit ordinary but not as bad as the midrange. I think I will swith back to the 160 main and see if that cleans the show up a bit. I think from memory the needle has a richer taper than the original drq so I will lift the clip to pos 3 as well. Am I on the right track here or is the rough blubbery sensation because the needle is actually leaner? I,m not sure about which letter means what on the needle. thanks in advance for any advice offered.