Gee thanks Cooter, now this is what I'm going to think of when asking questions on the forum...
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You, Lunatic, Silver, Lusiphur and the other senior members can sort out who is who, for some reason I imagine Lunatic as the red one.
Lu, I will have to check again after I fuel up but I haven't noticed the scary bubbling lately, may have been a one-off.
I doubt it is the torque drop, it just feels like it pulses when under steady load around 3-3500 and it can get stumbly in the idle and lower revs. If I roll into it, its smooth.