Non Tilting Tilting head issue

[shent]

Hi all,

Had my first mill arrive today which was great but have run into an issue immediately, hopefully someone can help. Tried tilting the head by loosening the 4 bolts attaching it to the column but no joy, saw what I thought was a retention pin (pictured) and removed it, the head started tilting...great stuff....but then stopped at around 45 degrees and now wont move back to upright or any where more than +/- 5 degrees of its current 45 degree position, anyone have any ideas about this at all? Mill is a Weiss VM32L.

(Have put this one another thread of mine but off topic so moved to here)

Cheers

Mark