Munz
If you get a gig just remember jumpers have an evil sense of humour.
Like you I built hours in the early 70's down at Winton on an old 182.
The jumpers favourite trick was the last one out would turn the fuel cock to off. Wised up their next trick and put my right hand down to cover it they to use the fuel cock guard as a push off point, many a sore hand and fingers.
Then I discovered steel gloves like butchers use suddenly they all decided I wasn't to be messed with.
No matter what you will enjoy the experience and jumpers have a particular sense of comraderie