[schoolboyeric]

i thank Larken for there quick and detailed response...
It is a great machine, just need some time adjusting to it....
Also if a probe gets dirty how do you clean it(lets say wax on it, does the wax disturb the probe from probing properly)...
You said to clean the machine use a vacuum, how about inside the black box... i think a DC powered vacuum should do the trick...

Thanks a bunch....