Two things on this thread...
A while back I needed some grade 8 bolts & nuts in lengths that HD, Lowes, & TS didn't stock......so I found this place - Bolt Depot - online, and their service was fast delivery and they had everything I needed, nothing back-ordered, and their prices were good. Check them out. I'll use them again.
Bolt Depot - Nuts and Bolts, Screws and Fasteners online
I also have that same EMP thumb, by the way! Got it for my BX25. Here's my own horror story with it. and it's a lot more serious than just a couple of missing bolts.....
I fiddled around with the mounting parts (2 pieces, plate and U-bracket that fit completely around the dipperstick and bolt tight to each other....but I couldn't quite get the two parts to really fit snugly enough on the dipperstick, though I tried several combinations of the various pre-drilled holes they put in the parts to accomodate varying size dippersticks.
Anyway, finally I thought it was probably tight enough after really snugging them up as tightly as possible, so I went out to dig up some rocks that I had been wanting to remove, and I picked them up easily with the thumb and I'm all smiles.....pretty nice size rocks about 2 ft diameter, some larger, some smaller, on average. The thumb grabbed them nicely, but after grabbing a few of them, I suddenly sprung a hydraulic leak, shooting from the 90 degree hydraulic connector on the cylinder on the dipperstick for the bucket. Stuff started spraying out all over the stick and bucket, nearly got me too, and so I quickly dumped the bucket to the ground and shut off the tractor to figure out what was going on.
Turns out the thumb's 2-piece mounting bracket had slid UP the dipperstick a few inches, even though that direction was toward the thickening wider end of the dipper....and the bucket, squeezing the rock against the thumb, had forced the entire thumb assembly upwards a few inches over the course of grappling about a half dozen rocks.....and those couple of inches slid it up to right where the 90 degree hose connector on the bucket cylinder is, which is very close to the dipper arm depending on the configuration of the arm and bucket at certain positions. The thumb bracket pushed so hard against it that it bent the connector and pulled the insert right out of the threads....and out shot the oil under big pressure.
Drove to my dealer about 20 miles away, brought the broken connector to show him so he could find the part, bought 2 new ones (extra for spare), came back, got the wrenches and took off the thumb altogether, then replaced the 90 degree connector.....torqued it down tight, using teflon tape to seal the thread connection.
Checked the hydraulic level, added a bit to replace what I had lost, fired up the tractor, everything nice & tight on the replacement connector, no more leak.
A few days later I figured out a way to put the thumb back on and not have to worry about having it ever slide up the dipperstick again. Been working great ever since. The thumb is heavy duty, solidly made, and works well....as long as you're careful to make sure it can't slide up the dipperstick when under great force. No amount of tightening the bracket prevented the mishap originally.