@bankz5152 off the foundry4x4 sitecheck to see if the below is your problem .
In order to add the domed end (important to make the X-Trouser smooth and less likely to catch), we have shortened it by 1.5mm in order not to contact the door latch mechanism. In some rare cases, where the door is too far forwards, this causes the latch to miss the pin on the X-Trouser and the door not close properly. On your original door catch, you will be able to see a witness mark where the latch has been striking the plastic sleeve of the striker. If this mark is within 1.5mm of the edge of the plastic, you may need to add an additional spacer underneath the Nylon block the X-Trouser bolts to. We are able to supply these, Part Number MWC3148. Alternatively, slacken the door hinges and move the door backwards a couple of mm.