car shifts out of first a little quicker than I would like it to.2nd is pretty quick and when it hits 3rd car seems to fall on it`s face and lug,almost like the trans is slipping.then it builds up and seems to take off.All this is at mild to mid throttle.I was told by the guy who built it that the 3rd gear falling on its face is the converter locking up a little early.I dont know.At wot,or close to it,all the shifts are positive and I`m happy with them.However at wot the trans will not shift out of 2nd gear.I have tolet off a little to get it to shift.On the highway doing about 80 If I floor it or close to it the trans will try to shift down into 2nd.Rpm`s will shoot up way high and I have to let off the gas to keep it off the rev limiter.I`ve taken it back to the guy once and he fixed one issue with 4th gear but the other problems persist.Is any of this differance I`m feeling from the stall change(2500 from stock) or gear change(2.73 to 3.42)Guy said he didnt know what else he could do to it as far as the shifting with the stall.I`m going to take it back,again, just wondering what I might be able to tell him about it.