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Hi - First question is does it need collimation - I own one and I have had it since 2008 and it has never needed to be collimated. Once they are locked down they rarely move.
The screws are not push pull screws - one set are locking screws and the other set are adjustment screws.
If it needs adjustment it is simple enough to do - the primary mirror is fixed - the secondary is the only mirror with adjustments. Release the locking screws and collimate the donut as you would a SCT (until the shadow of the secondary is centered. Just remember that after each adjustment you must re-centre your image.
Cheers
Geof Wingham
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