SkyWatcher SA GTi crashes into itself (not tripod)

[JohnNedelcu]

Good afternoon all, I'm looking for any help I can get with my SWSA GTi:

 

As the title suggests, my SWSA GTi's is crashing into itself when I'm slewing from NINA (with EQMod) or SynScan (Windows or Android).

In EQMod I have set the limits (but for some reason, it doesn't remember them between sessions).

 

When I try to slew and centre, it goes past the target, past the limit and the DEC axis crashes into the RA axis (the little screw that engages the RA clutch).

When I stop it, I unpark and set it to park at home and it starts moving back but stops short of the polar axis.

 

I tried fixing it by going into EQMod and setting the limits again (4+ times now).

I've had issues with it for months when I used it only via the SynScan Pro app on Android and the GoTo was always way off. Now it's gotten worse. 

 

What I've done so far:

• Made sure to start it in the "home" position (pointing at Polaris)
• After a crash, disengage the clutches, let it slew to home then manually move it to the home position and re-engage the clutches
• Reset the encoders via EQMod
• Checked location

 

PS:

My workaround now is to give it a slew command (In NINA), then stop it (via EQMod) when it's roughly pointing in the general direction, then quickly unpark and set tracking to sidereal (in EQMod). Plate solving eventually moves it to the target and tracking is fine once it gets there.

PPS:

Almost all targets I slew to are on the LHS (in the W - SW) as looking North, so it always crashes when it moves to the right of the polar axis (in case that's relevant).

Picture 1: 

Screw crash location

Picture 2:
Screw crash location Closeup

 

Picture 3:

Return to park/home position - this is what it thinks is home

Edited January 16 by JohnNedelcu