Quoted from Prodoshi:
in my experience there is no single part "metric" in pinball machines. i have had to buy all my tools new.
I was one of the fortunate souls to actually receive my pre ordered Big Lebowski pin. I guess it shouldn't have been a surprise but all the hardware on it was in metric, so that's when I acquired some metric nut drivers.
As for allens, I've never encountered anything that's required SAE, but then again, most of my allen wrenching is usually to put together IKEA stuffs.
Anyways, yesterday I was able to get the JP truck off and give the shaft a good cleaning with some rubbing alcohol. It most definitely improved the truck action. I didn't put any lube on there, but still might give it a try later.
Anyone with a sluggish truck, don't be intimidated to pull it off an clean it. It's very straight forward.
My tips would be:
1. Leave a little clearance between the bottom washer and playfield when re tightening. I didn't at first and the truck wouldn't move at all.
2. Keep an eye on the 2 washers and plastic spacer when you pull the truck. Mine went shooting off and naturally went under the couch forcing a profanity laden scavenger hunt.