I have a 1998 Honda Civic EX with 154k on the odometer. 4 days ago I did some spring maintenance and changed the engine oil and while I was at it changed the tranny fluid and filled it with 3 qts Honda ATF. A couple days later I took off from a stop light and it felt like the tires were spinning on gravel or something. Kind of a shuddering of sorts, only when taking off from a stop. Now after the car has been driven for 30 minutes or so, if I get on the gas a little from a stop it will do it most every time, usually followed by a sooner than normal shift into second gear. When the car is warm and I reverse out of a parking spot or my driveway and shift into D4 there seems to be a lag of a couple seconds before the forward gear engages. I performed a "stall test" as outlined in the factory service manual (because I have no pressure gauges - so it was basically all I could do) and it was all within spec. I called a local mechanic who speciallizes in Hondas and he theorized the fluid might have been slightly low causing "cavitation". Fluid is full. Is there anything else I should check/have checked before I give up and replace it? Thanks guys