Placed the order late night Monday, and the screws arrived Wednesday morning... nice!
Check the difference... (yes, I got so desperate with that one old screw that I resorted to filing a notch on top!)
Here's the clever bit... I like to put nuts on the back of all screws into nylon for added strength and knowing that you can torque away without stripping out the plastic.
For the rear pivot blocks, there are enough threads in the back to put a nut on the back 1/2 inch screw. However, the stock 1/2 inch screw is too short to get a nut on in the front, due to the anti-squat. As a solution, I ordered a couple of 5/8 screws to put up front instead. The fit under the rear bulkead for the nuts is tight, but they clear. However, you have to notch the bulkhead a little bit for the longer screws to clear. It's thick nylon at that point, so I don't think it makes much of a difference. Nice!
Cheers,
Ty