Thumbs up for longevity... though it may not win a beauty contest.

You may see comments regarding static grounding needed on systems. 
Well I can assure you its required in my situation as one day, I was emptying it and Wham Oh! ... I nearly did a back flipas a result...  
Sounds like you have a machinery conspiracy.... If I was you, I wouldn't stand on the back of your truck/ute after you use the dusty.

That grass needs cutting... who knows how many wallets you could find in there.

If your first cut is too short... Take the second cut from the longer end... LBD