You'll needDo you have a link to what you did to convert the 510 to adjustable? I must have missed it.
Drill press
Drill vice
cupped 3mm grub screw(if not vented) FDV where I got mine
1/16 drill bit (if grub screw isn't vented)
3/32 drill bit
3mm tap
Adjustable pliers
Drill press helps greatly but, believe I could have done by hand. I vented the cupped grub screw drilling through the cupped tip to not damage the Allen key end using 1/16 bit.
Then removed the positive pin from the frankenskull 510 and drilled that to the depth of the grub screw using the 3/32. Then tapped and threaded by hand using the 3mm tap and whaalaaa! Adjustable 510
FDA BOC