On 17 April 2011, Ja 1271 from Paekakariki and Ja 1250 from Glenbrook Vintage Railway double headed a 13 total train between Waiuku and Hamilton. This was also the first time in 40 years that two Hillside built Ja's have worked a train together.

I managed to get footage of the double header, and Ja 1271 heading north to Glenbrook in the morning.

List of trains and locations:
1: Ja 1271 northbound at Horotiu yard.
2: Pacing 1271 north of Ngaruawahia. (Sorry for the shake)
3: Ja 1271 passing Tregoweth Lane at Huntly.
4: Ja 1271 at Te Kauwhata station.
5: Ja 1271 passing Oram Road south of Mercer.
6: Ja 1271 at Buckland.
7: DE 507 heading the empty train under Shakespeare Road on the GVR line en-route to Waiuku, Ja 1271 and 1250 trailing.
8: Ja 1250 and Ja 1271 approaching Shakespeare Road, heading towards Glenbrook Station, DE 507 on the tail end of the train.
9: Ja 1250 and 1271 on the Mission Bush Branch.
10: Ja 1250 and 1271 departing Mercer after a quick stop.
11: Ja 1250 and 1271 at Rangiriri.
12: 1250 and 1271 south of Huntly.

Enjoy, and thanks for watching.