Video that I know of. But the principle is the same. Just tear into it and figure out the screws they move stuff around. The worm end play (axial movement) adjustment with the dime will be the same. Be careful with the dime tho. The collet is aluminum in the exos2 and if it’s the same in the iexos I can tell you it is fragile. But the usual cause of backlash is the mesh of the worm and wheel. If you get the worm block removed you can easily assess the end play. But I would avoid the collet unless it’s really wrong.
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired