Regular VL auto box, you all know what's what. When it shifts from 1st -> 2nd the transmission makes a violent crunching noise, the whole car shakes and as a layman I say that it seems as though two gears are grinding across each other / not engaging properly. When it happens I get off the gas, the noises go away and it drops into 2nd normally and I am able to continue driving. It is the worst when the trans is cold and seems to mostly go away when warm but still occasionally occurs. It appears during normal/hard acceleration but if I baby the throttle it will shift with a jerk but not make any grinding noises. I suspect the transmission copped a fair bit of abuse from the previous owner however I bought the car with the intention of using it as spares only, but I subsequently decided to drive it around until something broke, which is probably gonna be the trans. I changed the trans fluid when I decided to resurrect the car about 5 months ago and have only done about 4,000km since.