today we took the mainline for a drive to a place called jan juc about 20mins from geelong when taking of from an intersection the auto would slip a little its been doing it when hot lately so i was thinking its time to adjust the bands it will do it in 1st as well, i shut it of for about 10mins at jan juc while we picked up a filing cabinet all the way back to geelong it never slipped once so now im thinking its not bands maybe sticking valves what do you guys think ?

If it slips in the foward gears, but not in reverse, it may be that the forward clutch is slipping.  This could be because the plates are worn out, or a shaft seal is worn out and leaking fluid pressure to the clutch.  I assume you've checked the fluid level.

john i put 1/4 litre in it last week it never slipped before we put the new front pump seal in it then the auto expert a friend of mine showed me he didnt need the 1/4 inch block to adjust the front band after that it satarted slipping every now & then when hot it doesnt do it all the time though maybe 1or 2 times a week never in the morning only at night when im coming home

You want me to say the screen needs cleaning, but that is a remote possibility.  In reality, you are probably looking at an overhaul.  It is possible that when the seal was replaced the converter was not seated properly in the front pump and damaged the pump.  Don't ask me how I know this.

Moz, dont come home and it wont slip???/

bill haha i cant stay at work all the time helen would miss me & i would get sick of buffing around the clock

mark all the more reason i never go to mcdonalds & thats another story haha

Moz, seriously? have you added clock buffing to your resume??

update adjusted throttle control rod up 1/2 turn seem to change into top & drop back to second smoother didnt slip again today

Bill, only ROUND clocks! No square or other shapes evidently!!

However, taking a while to engage in reverse when cold is a symptom of a loss of fluid pressure when the piston O-rings are cold and contracted.  As they warm the swell and seal better.

Finally, trans fluid is very detergent and putting new fluid in a warn transmission can "clean" it too much and the clutches start slipping.

I hope the rod adjustment fixed your problem.  If it was any of the other situations all you can do is drive it unfortunately it will get worse until you need a rebuild.

      You might want to get the pressure checked when you get a chance. That will tell you what kind of shape the pump's in.

        Is the 12 at the bottom of an Aussie clock?

Why would the 12 be upside down? wouldn't that be 51 o'clock??