So, the last few days I've found time to build up the chassis/Y axis. Getting the side rail assemblies properly aligned was a bit of a faff, but it's done now!!
Click image for larger version. 

Name:	P6050357.JPG 
Views:	1461 
Size:	1.33 MB 
ID:	25830
Click image for larger version. 

Name:	P6050358.JPG 
Views:	1020 
Size:	1.06 MB 
ID:	25831
Click image for larger version. 

Name:	P6050359.JPG 
Views:	1078 
Size:	1.15 MB 
ID:	25832