So I got the transmission back in over the weekend with the new Hughes 22-25L converter. Everything runs good and I love the 2500 rpm stall (though in my car it's probably around 2200). For one thing, with the looser converter the tendency to want to creep forward at idle is gone and it shifts in and out of gear a lot smoother too. Only thing I'm noticing is that there seems to be this very minor vibration that comes in and out as I go between 2000 and 3000 rpm. It's noticeable in neutral sitting in the driveway, which leads me to be believe its the converter. The way I would describe it is if someone in the next car over had a very loud bass in his stereo and you'd feel your car vibrating a little as a result. I've already verified I don't have any clearance/interference issues. I'm going to try a few things before I do anything else, like unbolt the converter from the flex plate and rotate it over by one bolt and see if that cures it. I have 3 bolts, so I'll try each one. Maybe just some strange interaction between the two in their current relationship. But I guess my overall question is, if it comes down to it and I have to replace the converter, do I have to completely drop the transmission to get the converter out on a 2nd gen? Has any one simply pulled the transmission back in the tunnel and slipped the converter on and off? It's huge pain trying to wrestle the tranmission between the exhaust pipes and stuff. Has anyone heard of a Hughes converter being out of balance? Going to call them today and get their take.