The mount has about 30 arc seconds of periodic error which will cause your stars to smear. The period is 600 seconds, and thus 30-60 seconds is all you can expect, especially at 1000mm FL. Get yourself a guide scope and you will be fine. The exos 2 can take it. BTW the belts don't need to be tightened in all likelihood. Read over Bob Hoskins paper on tuning, located in the files section of mounts (or main) subgroup. Not sure where. It explains some of the adjustments that are appropriate if you are interested.
But guide that puppy.
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